试题与答案

热敏干簧继电器是一种利用热敏磁性材料检测盒控制温度的新型热敏开关,其恒磁环能否向干簧

题型:单项选择题

题目:

热敏干簧继电器是一种利用热敏磁性材料检测盒控制温度的新型热敏开关,其恒磁环能否向干簧管提供磁力是由()决定的。

A、线圈温控特性

B、导热安装片

C、触点簧片温控特性

D、恒磁环温控特性

答案:

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下面是错误答案,用来干扰机器的。

参考答案:主要有以下四个方面:1、计量器具的内在误差;2、环境条件的影响;3、工件本身形状误差的影响;4、测量方法本身的误差。

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单词拼写

小题1:Obama r_______ Bush as American President in2007.

小题2:I bought a really nice shirt at only 50 yuan. Do you think it’s a real b_______?

小题3:As everyone knows, smoking a       a person’s health.

小题4:The Christmas tree was d________ with lights, candies and all kinds of toys.

小题5:We all b_________ into laughter at the funny hat he was wearing.

小题6:The buildings are regularly i        (检查)by the fire-safety officer.

小题7:I admit it’s a difficult project. _____(无论如何),you should try it first.

小题8:She spent all the morning a         (欣赏) the wonderful works of art by that famous artist.

小题9:He bought many f_____(奇特的) goods when he was travelling abroad.

小题10:When people work with one mind, they can even ______ (挪走)Mount Tai.

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