空调装置突然停机或压缩机不启动，这多数是制冷系统中的故障。
参考答案：错
Assertive behavior involves which of the following elements
A．Expressing an air of superiority.
B．Saying what is on your mind at the expense of others.
C．Avoiding unpleasant situations and circumstances.
D．Standing up for your rights while respecting the rights of others.
焊丝伸出长度越长，则电阻热越小。( )
