问题
单项选择题
电动潜油泵井调整过欠载值时,要缓慢操作,边调整、边观察显示值,直到显示为所需要的()值为止。
A、过载
B、欠载
C、电流
D、电压
答案
参考答案:C
电动潜油泵井调整过欠载值时,要缓慢操作,边调整、边观察显示值,直到显示为所需要的()值为止。
A、过载
B、欠载
C、电流
D、电压
参考答案:C
完形填空。 | ||||
Dear Tony, Thanks 1 me the school last week. I was having a hard time 2 it until you came along. And I 3 meeting Carlos. He's really good at math, isn't he? He said he 4 help with my math project. Friends like you make it 5 easier to get along in a new place. Bill | ||||
|