Why does the author refer to the gas mask as “old reliable

Answers

Answer 1

used in the 1970s and 1980s

Airborne toxic materials may be gaseous (for example, mustard gas and chlorine gas) or particulates (such as biological agents). Many filters include protection from both types.

The first gas masks mostly used circular lenses made either of glass, mica or cellulose acetate. With the exception of the latter, these materials were quite brittle and needed frequent replacement. Later on, the Triplex lens style (two layers of glass and one layer of cellulose acetate in between)[1] became more popular, and alongside the simpler cellulose acetate they became the standard into the 1930s. Panoramic lenses were not popular until the 1930s, but there are some examples of those being used even during the war (Austro-Hungarian 15M). Later, polycarbonate started being used for its strength.

Some have one or two filters screwed (via inlets) onto to the gas mask while others have a large filter (coffee can filter) connected to the gas mask with a hose that is sometimes confused with an air-supplied respirator in which an alternate supply of fresh air (oxygen tanks) is delivered.


Related Questions

HELP URGENT!!!!!! Will give brainliest

Answers

I’m pretty sure it’s a cuz it’s used in a different way that probably can be perceived in different kinds of perspectives

What are the basic characteristics of career management?

Answers

personal fulfillment, work/life balance, goal achievement, and financial security.

Help plis help plis

Answers

max is in the water with sarah

Answer:

max and Sarah are in water

He doesn’t wants to eat cakes

Answers

Answer:

Shakespeare? tcrtxtctftftftxtxtxtx

Answer:

context please?

How will you prepare if you learned that an earthquake will shake your place?​

Answers

Answer:

If there is no shelter nearby, get down near an interior wall or next to low-lying furniture that won't fall on you, and cover your head and neck with your arms and hands. ... HOLD ON to your shelter (or to your head and neck) until the shaking stops. Be prepared to move with your shelter if the shaking shifts it around.

Explanation:

do you mind to brainliest my answer

A comparison that uses "like" or "as" is known as what?

Question 6 options:

1. A simile


2. An idiom


3. A metaphor


4. An expression

Answers

A comparison that uses "like" or "as" is a simile.

Answer:

Simile

Explanation:

A simile uses "like" or "as" to compare things.

For example:

Darby is as tall as a giraffe.

Hope this helps.

If it does please mark brainlist.

According to the highlighted
section of this creation story,
when did the twins begin
arguing with each other?
A. when the grandmother began to favor
one over the other
B. when they were born
C. before they were born

Answers

Answer:

The answer is C.

Explanation:

Before they were born.

Which one is correct and why? (Grammatically)

if someone sent me a pic of math homework should I say:
1. That's hard
2. It's hard

If someone sent me a pic of new dress should I say:
1. That's hot
2. It's hot

Answers

Answer:

To me I pick

2. It's hard

2. It's hot

Explanation:

it sounds better

Which statement best summarizes the central idea of the quatrain?

The mistress is not as beautiful as natural elements.
The mistress’s hair is dull and wiry, unlike the whiteness of snow.
The mistress has eyes like the sun and lips more red than coral.
The mistress’s appearance is similar to that of the sun, coral, and snow.

Answers

Answer: A:The mistress is not as beautiful as natural elements.

Explanation:

A statement which best summarizes the central idea of the quatrain is that: A. the mistress is not as beautiful as natural elements.

What is a central idea?

A central idea can be defined as the fundamental (key) point in a literary work, which is used by an author or a writer to tie every other elements of fiction when writing a true story.

Based on the the first quatrain of "Sonnet 130.” by William Shakespeare, we can logically deduce that a statement which best summarizes the central idea of the quatrain is that the mistress is not as beautiful as natural elements such as:

The SunCoralWireSnow

Read more on Sonnet 130 here: https://brainly.com/question/12890602

#SPJ9

MLA citation of an online journal article

Answers

Answer:

Author(s) name. "Title of the article." Title of the journal, vol. volume number, no. issue number, Year of publication, Doi.

Explanation:

Doi: date of inquiry

How jeff escape from prison in escape from spiderhead

Answers

Jeff's decision to take an overdose of Darkenfloxx himself is a decision to sacrifice himself for the sake of Rachel. Within the Judeo/Christian mythos, it is the Christ like decision to endure death in order to be resurrected to eternal life.

Use the word given in capitals at the end of each sentence to form a word that fits in the gap. The word in each pair of sentences is formed the same way. There is an example at the beginning (0).

Answers

Answer:

hungeranger

Explanation:

modifying the words

Summary that describes the changing relationship between the children and boo radley

Answers

Answer: While at first, the children view Boo Radley as an enigma, a few noteworthy occurrences drastically change the children's perception of him, influencing their intricate relationship.

Explanation:

Choose the answer that best completes this sentence.

In 1863, President Abraham Lincoln designated the last Thursday in November as a national day of Thanksgiving, _____ in 1939, President Franklin Roosevelt decreed that the holiday should always be celebrated on the fourth Thursday of the month.
A. for example
B. therefore
C. but
D. so

Answers

The answer is c. But. Because the holiday is being continued

Identify three things that the poet knows he will give up once he embarks on his
journey of protest.

Answers

Answer:

His comfortable life with his mother, the Friday night hangouts he has with his friends, and most of his life. ("...my sunset is drenched with red.")

Explanation:

I hope this helps!

Which of the following does not describe part of the "fight or flight" mechanism?
A. it's a suvival instinct in humans
B. it gives the body an "adrenaline rush"
C. the body gets tense and ready for action
D. there is uncontrollable yelling

Answers

Answer:

D. there is uncontrollable yelling

Explanation:

All of the options are important elements of the "fight or flight" mechanism except for D. People don't start uncontrollably yelling when danger comes - in fact, many people get quiet because we have adapted to hide from predators or peril. Hopefully that's helpful! :)

Exposure therapy, contingency management, behavioral activation, modeling, and biofeedback are all types of:
A. learning-based techniques
B. instinct-based techniques
C. behavior disorders
D. positive reinforcement

Answers

D. Would be the best all I can do is leave it at that my apologies. It just sounds right, if someone else responds may I suggest taking their answer if they have a good reason for their answer. Again, my apologies.

Positive reinforcement techniques include exposure treatment, contingency management, behavioral activation, modeling, and biofeedback. Thus, option D is correct.

What is Exposure therapy?

Exposure therapy is a psychological treatment designed to assist people in confronting their concerns. People who are afraid of anything try to avoid the dreaded objects, activities, or circumstances.

Although avoiding stressful situations may assist diminish feelings of anxiety in the near term, it can exacerbate the fear in the long run.'

Researchers use reinforcement approaches to give pupils feedback on how people think of their performance, allowing us to improve desired outcomes while minimizing or eliminating bad performance.

Therefore, option D is correct.

Learn more about exposure therapy, here:

https://brainly.com/question/19807807

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Which of the following sentences
correctly punctuates the
transitional phrase?
A. Even more, I was cheering for the team that
ended up winning."
B. More than winning the game we also won the
state championship.
C. Nevertheless I must say the opposing time
deserved some praise.
D. Above all it was significant that both teams
exhibited good sportsmanship and enjoyed the
game.

Answers

Answer:

D. Above all it was significant that both teams exhibited good sportsmanship and enjoyed the game.

If a leader tells all of the other members exactly what to do without asking for feedback, s/he is likely taking on what type of leadership style?

Answers

podria ser un lider ambicioso o ideal

Explanation:

Which transitional word best fits at the beginning of sentence 9?

Answers

Answer:

Could you please give me more info?

Explanation:

I can’t answer if I don’t have the whole problem. Can you take a pic and upload it?

out/week/lot/luis/a/the/doesn t/ go/ during.

Answers

Answer:

Oh that's nice nice to meet you here

Answer:

Luis doesn't go a lot during at the week.

Explanation:

a wilted flower

phrase or a sentence?

Answers

Answer:

The words "a wilted flower" is a phrase.

I hope this helped at all.

Phrase

Frequency: Wilt means to become limp. An example of wilt is for a flower to fold in half after it hasn't had water for a few days

Master of lake town actions and beliefs

Answers

Answer:

The Master of Lake-town had a good head for business, but he also proved himself a greedy coward. He led the Lakemen successfully for two decades, while promoting good trade with the Elves. But his cowardice in fighting Smaug and in the Battle of the Five Armies made him lose popularity among the people

Which of the following sentences
punctuates the appositive or
appositive phrase correctly?
A. Shannon, my sister,
owns a healthy living
company that allows people to exercise while at
work.
B. Shannon, my sister owns a healthy, living
company that allows people to exercise while at
work.
C. Shannon, my sister owns a healthy living
-company, that allows people to exercise while at
work.
D. Shannon my sister owns a healthy living,
company that allows, people to exercise while at
work.

Answers

Answer:

C. Shannon, my sister owns a healthy living -company, that allows people to exercise while at work.

which reading strategy refers to reading only the key words and phrase?

Answers

Answer:

Selective Highlighting/Underlining (or skimming)

Explanation:

This strategy helps people understand the article/passage overall by highlighting key words or phrases.

Choose the coordinating conjunction that establishes a logical relationship between the two clauses.
Shrimp can eat pretty much anything,
the best food for them is ground-up wild fish.
or
but
for
nor
Need help on this question?

Answers

The answer is but and I need to add this so my answer is 20 characters long

How gandhi appeals to emotions?

Answers

Answer:

what do you mean, you need to put the options so we can understand

1- This is the third book I ............. this year.
a)bought
b)have bought
c)buy
d)had bought

2- The car .............. fast when it hit the tree .
a)was moving
b)has moved
c)is moving
d)moves

3- He ............ in a hotel since his house collapsed .
a)has been living
b)had lived
c)lived
d)was living

Answers

Answer:

1-(b) have bought

2-(a) was moving

3-(a) has been living

here your answer

hope it helps you

Answer:

Ans 1 have bought

Ans 2 was moving

Ans 3 was living

Explanation:

hope it helps

why do people prefer fast food restaurants over international/ traditional restaurants? unlike the past when it was vice versa

Answers

more cost effective, well known and are many fast food places anywhere and everywhere, well it is fast, often these days younger people go out like teens so they like going to affordable places, good food deals, they offer like things for getting their food like hjs offers glasses and maccas does monopoly, also places like maccas do partnerships with celebs so they become even more popular

3.
Which word does the underlined participle describe in the sentence below?
The judge revealed the surprising winner of the contest.
O A judge
OB winner
OC contest
OD revealed

Answers

Answer:

D. revealed

Explanation:

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