阳起石煅淬宜采用的淬液是（）
A.黄酒
B.米醋
C.水
D.黄连汁
E.三黄汁
参考答案：A
用画线词的对应词填空。
1. Her ______ is an English teacher and her father is a Chinese teacher.
2. My sister is in Beijing and my______ is in Chengdu.
3. These are his pens and ______are pencils.
4. This is my ______, Mary. And ______ is my brother, Mike.
5. My grandmother is sixty and my ______ is sixty-five.
2.2kW的异步电动机，运行于相电压为220V的三相电路，已知电动机效率为81%，功率因数0.82，这台电动机的额定电流为( )A。
A．4 B．5C．8.7 D．15
