1032漆在常态下的击穿强度为()。
A.3.3千伏/毫米
B.70~95千伏/毫米
C.65~90千伏/毫米
D.65~100千伏/毫米
参考答案:B
企业持有现金的动机()
A、收益行动机
B、交易性动机
C、预防性动机
D、投机性动机
—Beijing is one of _____ in the world today.
—So it is. And more and more people like to visit it.[ ]
A. biggest city
B. the biggest city
C. biggest cities
D. the biggest cities