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问题 单项选择题

离心泵的有效气蚀余量（NPSH）与吸入系统有关，而与泵本身无关。而离心泵的必须气蚀余量（NPSH）与吸入系统无关，而与泵本身（）。

A、设计无关

B、设计有关

C、安装位置有关

D、制造无关

答案

参考答案：B

单项选择题 A1/A2型题

引起异位ACTH综合征的肿瘤最常见的是（）

A.甲状腺髓样癌

B.胸腺癌

C.小细胞性肺癌

D.胰腺癌

E.神经节细胞瘤
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填空题

用所给动词的适当形式填空。

1. I'm sure there _______ (be) a robot in my home in the future.

2. His father _______ (not be) back home in a week.

3. My mother often _______ (enjoy) the TV plays in the evening.

4. He'll go _______ (swim) next Sunday.

5. What time _______ they _______ (get)  up tomorrow ?

6. —Are you enjoying _______(live) here?

    —Yes，we are.

7. _______ you _______ (teach) us Japanese next term?

8. It often _______ (rain) in South China.

9. Now he _______ (be)a student. Three years ago he _______ (be)a pupil.

    Next term he _______(be) in high school.

10. There ________ (be)a class meeting next Friday and our teacher _______ (have) something to say.
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