—You'd better not eat too much salt. It'

根据中文或英文单词填写单词 (每空1分，共10分)

小题1:             (兔子) like eating carrots and vegetables.

小题2: The princess has been asleep for many            (世纪).

小题3: The firemen were so ________(勇敢的) that they rushed into the fire.

小题4: Can you find the answer in the story __________(在……的下面)？

小题5: It took a long          (时期) of time to build the Great Wall in China’s history.

小题6: When I was in high school, most of my classmates            (骑车) to school.

小题7: One metre is 100 centimetres, or thirty-nine        (inch).

小题8: Air is so important for us. We can’t live              (with) it.

小题9: There is something            （usual) in today’s newspaper. You should read it.

小题10: Millie and her friends enjoyed            (they) very much at the party.

左偏态分布资料（或正偏态资料）的集中趋势指标为（）。

A.算术均数

B.中位数

C.几何均数

D.百分位数

E.变异系数

对中间包钢液面的控制有什麽要求？为什麽？

违反交通信号灯通行的一次记6分。

消防泵出水管路上装有止回阀，其作用是什么？如何检查其气密性？