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问题 问答题 简答题

什么叫摆度，净摆度，相对摆度和绝对摆度、主轴倾斜与净摆度有何关系？

答案

参考答案：

同一测量部位对称两点百分表读数之差称为全摆度

同一测点上下两部分全摆度数值之差称为净摆度

相对摆度是指测量部位每米长度的摆度值

绝对摆度是指在该处测量处的实际摆度值

主轴的倾斜值是该处净摆度值的一般

阅读理解

根据短文内容，判断正(T)误(F)。

My name is Bill. I get up at twenty to seven in the morning. Then I have breakfast. After breakfast I go to school. We have four classes in the morning. I have lunch at school, but on Sundays I have lunch at home with my family. I often have supper at home. I often help my mother cook. My mother is an English teacher, and she often helps me with my English.

小题1:I’m a student.

小题2:I don’t have lunch at home on Sundays.

小题3:I often help my mother cook.

小题4:I get up at six in the morning.

小题5:My mother helps me study my English.
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选择题

了解安全知识，可以更好地保护人身和财产安全。下列做法安全的是[ ]

A．煤气泄漏，关阀开窗

B．霉变大米，煮熟食用

C．电器着火，用水扑灭

D．乘坐火车，携带鞭炮
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