ZP•Y1-8型移频自动闭塞，载频为550HZ、650HZ、750HZ、850HZ、

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问题单项选择题

ZP•Y1-8型移频自动闭塞，载频为550HZ、650HZ、750HZ、850HZ、它的频偏是（）。

A、±25HZ

B、±35HZ

C、±45HZ

D、±55HZ

答案

参考答案：D

填空题

单词填空，用括号内所给单词的正确形式填空。

1. Our beautiful classroom _______(clean) every day.

2. In order to improve Mary's self-confidence, her teacher asked her to look at _______(she) in a

mirror every morning and say "I'm the best."

3. She was very _______(happy) to fail the final exam.

4. Here are _______(tomato) noodles. They smell good!

5. Trust him! He has no difficulty _______(work) out the problem.

6. Cleaners clean the street every day. Their work is _______(true) common.

7. More and more people all over the country are worried about food _______(safe).

8. Windy does _______(badly) in P.E. than me.

填空题

在○里填上“>”、“<”或“=”。

2分○90秒 70分○1时 1时○110分

20分○1时 5时○160分 1时20分○80分