滚动轴承的游隙,是指轴承两套圈同时沿径向或轴向的最大活动量。
参考答案:错
Excel规定可以使用的运算符中,没有______运算符。
A.算术 B.逻辑 C.关系 D.字符
阅读理解。
My name is Charlie Street. I'm not twelve. I am eleven. I'm not in Grade Eight. I am in Grade Seven. I'm in Class Two. My teacher isn't Miss Black. My teacher is Mr Grey. My phone number is 6688469.
根据短文回答问题,每空一词.
1.What is my last name?________
2.How old am I?________
3.What grade am I in?In Grade ________.
4.Who is my teacher?________ ________.
5.What class am I in?In Class ________