检查“V”型皮带张紧度可采取在“V”型皮带中部，用30～70N的力

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问题单项选择题

检查“V”型皮带张紧度可采取在“V”型皮带中部，用30～70N的力按下或拉起，“V”型皮带应能离开原位（），否则应进行调整。

A.5mm

B.10～20mm

C.20～30mm

D.30～40mm

答案

参考答案：B

排序题

根据短文内容，给下列句子排序

Hi, I'm Sam, and this is my dog Blackie.

I can't see, so Blackie helps me. Our mornings are busy. Blackie wakes up first, and then I get up.

We play together, and then he eats, and I do some exercises. Blackie and I like to go for a walk together.

So we leave the house early. When I get back, I have a shower, do some homework, and then I have

breakfast.

( )Sam takes a shower.

( )Blackie eats.

( )Sam gets up.

( )Sam does his homework.

( )Sam has breakfast.

( )Blackie wakes up.

( )Sam and Blackie leave the house early.

( )Blackie and Sam play.

( )Sam does some exercises.

单项选择题

( )是指权利人对自己的所有物享有的占有、使用、收益和处分的权利。

A．自物权

B．他物权

C．用益物权

D．担保物权