混合气过浓是由（）等原因引起的。A、浮子室油而过低 B、浮子室

搜题请搜索小程序“爱下问搜题”

问题单项选择题

混合气过浓是由（）等原因引起的。

A、浮子室油而过低

B、浮子室油面过高

C、油管堵阻

答案

参考答案：B

填空题

1.	He is in the ________ (classroom, washroom).
2.	They're ________ (teachers, students). They're in the ________ (gym, classroom).
3.	They are in the ________ (gym, office).
4.	This ________ (shirt, skirt) is ________ (old, new). I like it.
5.	I have ________ (three, four) ________ (pencils, pencil) in the pencil box.

填空题

在等腰梯形ABCD中，AD∥BC，AD=1，AB=CD=2，BC=3，则∠B=______度．