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提问人:网友tdz0557 发布时间:2022-01-06
[单选题]

Respirable dust in the last open crosscut?

A.0.42 mg/m3

B.0.55 mg/m3

C.0.62 mg/m3

D.0.88 mg/m3

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  • · 有4位网友选择 C,占比44.44%
  • · 有3位网友选择 A,占比33.33%
  • · 有2位网友选择 B,占比22.22%
匿名网友[115.***.***.185]选择了 A
1天前
匿名网友[71.***.***.137]选择了 A
1天前
匿名网友[104.***.***.143]选择了 A
1天前
匿名网友[29.***.***.46]选择了 B
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匿名网友[79.***.***.95]选择了 C
1天前
匿名网友[101.***.***.144]选择了 C
1天前
匿名网友[232.***.***.82]选择了 B
1天前
匿名网友[114.***.***.129]选择了 C
1天前
匿名网友[203.***.***.53]选择了 C
1天前
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更多“Respirable dust in the last open crosscut?”相关的问题
第1题
At last, you should restate the purpose and call for an ______.
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第2题
阅读理解。????The organization, Keep Time for Child...
阅读理解。
The organization, Keep Time for Children, was started in 2002 to make people realize the importance of family time on weekends, particularly for families with school age children. __1__ We will try to help

parents take one day off on weekends to be with their family. __2__ What children want and need most

is to spend time with their parents, not with toys or taking part in activities. But with more and more people working on weekends, many children of school age don't see their parents anywhere near as often as they should. __3__ The movement is designed for families of all types and sizes under increasing pressure to

work on weekends. Because weekends are the very time when school age children are at home and in

need of their parents. We are going to put forward a Family Day Bill (议案) to the government. __4__ It

is aimed to solve the problems of increasing "shift (换班的) parenting" and of young children being left

"home alone" on weekends. __5__ If parents have a day off, they can spend a lot of time and energy with their children to share their happiness.

A. Keep Time for Children is now starting a movement.

B. The law is likely to make sure that parents take good care of their children.

C. Our aim is mainly to encourage parents to spend time with their children.

D. An American set up the organization.

E. It would give every parent of children under the age of 16 the right in law to a weekend day off each

week.

F. Our time is the most important thing that we can give our children.

G. Parents who do not share enough time with their children are to blame.

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第3题
Respirable dust in the last open crosscut
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第4题
The telephone message should be brief. What does “brief” mean?

A、short with a few words

B、long with lots of words

C、complete

D、very concrete with details

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第5题
The deadweight loss from a $3 tax will be largest in a market with

A、inelastic supply and elastic demand.

B、inelastic supply and inelastic demand.

C、elastic supply and elastic demand.

D、elastic supply and inelastic demand.

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第6题
Some of the comments under the video displayed how a bias can make us disregard something without even looking at what it is.

A、neglect

B、offend

C、dislike

D、abuse

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第7题
The following practices can help control respirable dust levels in the longwall shield?

A、Canopy-mounted spray systems

B、Shield sprays on the underside of the canopy

C、Air dilution

D、Unidirectional cutting sequence

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