为防止和急救酸类烧伤,下列哪些做法是正确的()A、使用高氯酸时带胶皮手套 B、使用氢氟

题型:单项选择题

问题:

为防止和急救酸类烧伤,下列哪些做法是正确的()

A、使用高氯酸时带胶皮手套

B、使用氢氟酸时带线手套

C、被酸烧伤时用2%的醋酸洗

D、被酸烧伤时用2%小苏打溶液洗

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题型:单项选择题

I _______ up here night after night for weeks now. You see, I _______ to give you a surprise.

A.have come; hoped

B.have been coming; has hoped

C.have come; was hoping

D.have been coming; was hoping

题型:单项选择题

阅读理解

     There are many American expressions about insects-like bees, for example. Bees always appear

to be busy, moving around their homes, or hives. In fact, you might say your house was a beehive of

activity if your whole family was helping you clean. You also might say you made a beeline for

something if you went there right away.

     Here is an expression about bees that is not used much any more, but we like it anyway. We think

it was first used in the nineteen twenties. If something was the best of its kind, you might say it was the

bee's knees. Now, we admit that we do not know how this expression developed. In fact, we do not

even know if bees have knees!

     If your friend cannot stop talking about something because she thinks it is important, you might say

she has a bee in her bonnet. If someone asks you a personal question, you might say "that is none of

your beeswax". This means none of your business.

     Speaking of personal questions, there is an expression people sometimes use when their children

ask, "where do babies come from?" Parents who discuss sex and reproduction say this is talking about

the birds and the bees.

     Hornets are beelike insects that sometimes attack people. If you are really angry, you might say you

are mad as a hornet.

     Butterflies are beautiful insects, but you would not want to have butterflies in your stomach. That

means to be nervous about having to do something, like speaking in front of a crowd. You would also

not want to have ants in your pants. That is, to be restless and unable to sit still.

1. When Tom spends his weekend cleaning his house, we can say he is as busy as ________.

A. an insect              

B. a hornet              

C. a butterfly                

D. a bee

2. Which of the following expressions can NOT be often heard in daily life?  

A. Make a beeline.

B. That is none of your beeswax.

C. It's the bee's knees.

D. My house is a beehive of activity.

3. When you say to Mary "you have a bee in your bonnet", what do you really mean?

A. She should stop talking about something.

B. You care about her very much.

C. She is in danger and needs help.

D. What she talks about is really important

4. Which of the following would be discussed next?   

A. Some expressions about pigs.

B. Some expressions about noses.

C. Some expressions about bugs.

D. Some expressions about colours.

题型:单项选择题

下列关于金融风险造成的损失的说法,不正确的是( )。

A.金融风险可能造成的损失分为预期损失、非预期损失和灾难性损失

B.商业银行通常采取提取损失准备金和冲减利润的方式来应对和吸收预期损失

C.商业银行通常依靠中央银行救助来应对非预期损失

D.商业银行对于规模巨大的灾难性损失,一般需要通过保险手段来转移

题型:单项选择题

电力系统承受大扰动。

下列大扰动中不属于第三级安全稳定标准的是( )。

A.故障时断路器拒动;
B.直流输电线路双极故障;
C.一回500kV线路三相短路,另一回500kV线路保护误动跳闸;
D.失去一个大容量发电厂。

题型:单项选择题

钢水含碳量可以采用()等方法进行判断。

A.看火焰

B.看火花

C.取钢样

D.结晶定碳

E.都不对

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