一般来说，封箱机在运行过程中，突然发现仅纸箱一侧的箱板没有粘

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问题单项选择题

一般来说，封箱机在运行过程中，突然发现仅纸箱一侧的箱板没有粘合，在纸板上也没有发现熔胶，出现此现象的主要原因是（）

A、熔胶机中无熔胶

B、供给熔胶机的气源突然中断

C、供给熔胶机的电源突然中断

D、热熔胶机喷嘴系统故障

答案

参考答案：D

阅读理解

Read and judge. 阅读短文，判断下列句子是(T)否(F)正确。

This is my brother, Tom. He is a teacher. Tom likes to eat meat and hot dogs. He likes to play ping-pong

and checkers. On Sunday, he always plays checkers with me. And every day he plays ping-pong in the morning. ( ) 1. Tom is my brother.

( ) 2. Tom is a student.

( ) 3. He likes meat and hot dogs.

( ) 4. He likes ping-pong and checkers.

( ) 5. Every day he plays checkers.

( ) 6. He plays ping-pong with me in the morning.

单项选择题

套筒式补偿器的组成部分不包括（）。

A．带底脚的套筒

B．插管

C．卡环

D．填料函