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问题 单项选择题

如图所示水泵吸水系统，水箱与水池液面高差Z=30m，断面1-1至2-2的总水头损失hw=3mH2O，则水泵的扬程H至少应为：（）

A.30mH2O

B.33mH2O

C.29mH2O

D.40mH2O

答案

参考答案：B

补全对话，情景问答

根据对话情景，在空白处填入合适的句子。

A: Where did you go last night? I called you but nobody answered.

B: Oh.__1__

A: At about half past eight. __2__

B: I wasn't at home then.  I was at the cinema with my parents.

A: Cinema?__3__ 

B: The Lord of the Rings.

A: __4__ 

B: It is so wonderful.  The music is sweet and pleasant.

A: Yes, you are right.  I saw that movie on TV.

B: __5__ 

A: Well, I wanted to borrow your English-Chinese dictionary.  Is it here?

B: Yes, here you are.

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多项选择题

下列哪些不是丁螺环酮的主要药理作用：（）

A.阻断D2受体

B.阻断5-HT1A受体

C.抑制突触前膜5-HT的回收

D.激动5-HT1A受体

E.阻滞NE的再摄取
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