电焊机未断电停机，可以拆除并整理焊机二次线吗？

某工地工人在施工过程中不慎被钢筋刺破胸壁。

该损伤的类型为（）

A.挫裂伤

B.挤压伤

C.扭伤

D.开放性损伤

E.闭合性损伤

阅读理解

     History is full of cases where dreams have been a pathway to creativity and discovery.A striking

example is provided by Dr.Otto Loewi, a pharmacologist and winner of a Nobel Prize.Loewi had

spent years studying the chemical transmission of nerve impulses (脉搏). A tremendous breakthrough

in his research came when he dreamed of an experiment three nights in a row.The first two nights he

woke up and wrote down the experiment quickly and untidily on a pad.But the next morning, he

couldn't tell what the notes meant.On the third night, he got up after having the dream.This time, instead

of making notes he went straight to his laboratory and performed the crucial experiment.Loewi later said

that if the experiment had occurred to him while awake he would have rejected it.

     Loewi's experiment gives some insight into using dreams to produce creative solutions.Inhibitions (拘谨) are reduced during dreaming, which may be especially useful in solving problems that require a fresh

point of view.

      Being able to take advantage of dreams for problem solving is improved if you "set" yourself before

retiring.Before you go to bed, try to think intently about a problem you wish to solve.Steep yourself in (潜心于) the problem by stating it clearly and reviewing all relevant information.Then use the suggestions

listed in the previous section to catch your dreams.Although this method is not guaranteed to produce a

novel solution or a new insight, it is certain to be an adventure.About half of a group of college students

using the method for a week recalled a dream that helped them solve a personal problem.

1. The main idea of this passage is that________.

A. very little is really known about the meaning of dreams

B. it is possible to "catch" one's dreams by planning before going to sleep

C. dreams can be useful in producing creative solutions to one's problems

D. Loewi's experiment helped in the study of transmission of nerve impulses

2. The first paragraph is mainly organized by________.

A. classifying types of experiments

B. summarizing the work of one researcher

C. comparing and exploring historical cases

D. telling in time order about one man's researchf

3. If Loewi had thought of the experiment while awake, he would have________.

A. asked someone else to do it  

B. thought it was a bad idea

C. tried it out on his own  

D. thought it was a wise idea

4. The author probably thinks that________.

A. Loewi should not have conducted his experiment

B. dreaming is of very little value to most people

C. inhibitions may stop someone thinking of useful ideas

D. college students should not try out dream experiments

5. The author seems to be in favor of________according to the passage.

A. seeking creative solutions

B. avoiding scientific experiments

C. inhibitions before dreams

D. becoming a famous scientist

成本考核要求责任者对成本负责。

下面是关于ios类的叙述，正确的是( )。

A．它是istream类和ostream类的虚基类

B．它只是istream类的虚基类

C．它只是ostream类的虚基类

D．它是iostream类的虚基类

酒店收银易项目，合作期限应不低于（）年。

A.2

B.3

C.4

D.5