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
参考答案:D
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.
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