严禁用()的方法使两电源解列或并列。
A.断、接空载线路;
B.拉、合刀闸;
C.短接线;
D.非同期
参考答案:A
控制计算机部件协调工作的设备
A.Telnet和FTPB.Modem和ISDNC.IE和NetscapeD.Outlook Express和FoxmailE.Internet和Intranet
—Are you _ the dark?
—Oh, yes. I always go to sleep with the light on. [ ]
A. used to
B. afraid of
C. interested in
D. good with