A．较小的密度
B．较大的比热容
C．较低的凝固点
D．较高的沸点
答案：B
—Ken, ， but your TV is going too loud.
—Oh, I'm sorry. I'll turn it down right now.
A．I'd like to talk with you
B．I'm really tired of this
C．I hate to say this
D．I need your help
机械和电动机有无震动和异常声音，温度是否正常，各部位轴承温度不得超过（）℃。
A、80
B、90
C、100
D、110
