直流系统手动闭锁的顺序是（）。
A.先整流后逆变
B.先逆变后整流
C.整流逆变同时
D.不一定
参考答案：A
—Pandas are very beautiful, _______ kind of shy. Do you think so?
—Sure. And they are the treasure of our country.
A．and
B．so
C．but
D．or
程序执行结果s的值是 【14】 。 Private Sub Command1_click() i=0 Dos=i+si=i+1 Loop Until i＞=4 End Sub
