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问题 单项选择题

当螺杆压缩机容积排气量与用户实际用气量不平衡时可以选择多种手段，不包括( )。

A．吸气节流调节
B．转速调节
C．排气管连续调节
D．停转调节、排气连通调节

答案

参考答案：C

填空题

用所给单词的正确形式填空。

1. She____(win)the second prize in yesterday's speech competition.

2. Do you know when we will have our___(finally )exam this term?

3. Next you need_____(put) everything into a blender.

4. Could you give some _________ ( advice ) to me ,please?

5. The idea________ ( sound ) interesting.

6. How _____(much) sheep are there on the hill?

7. Tell him _______ ( be ) quiet in the reading room.

8. He has breakfast ________ ( quick ).

9. There are some______(different) between us.

10. Thanks very much for your ________ (invite ).
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单项选择题

下列哪个不是nio包的新特点

A．内存映射技术

B．文件锁定

C．字符及编码

D．阻塞I/O
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