更多"[单选题]6. Last week the seamen’s stri"的相关试题:
[单选题]Last week we ________ two days ________ for sightseeing.
上周我们休息了两天去观光。
A.had;off
B.save;on
C.take;out
D.gave;in
[单选题]Last week there ______ a meadow between us.
A. is
B. are
C. was
D. were
[单选题] Last week, I_____to buy some books onlinE.
A. tried
B.try
C. trying
D.tries
[判断题]Last week we (____) two days (____) for sightseeing.此处空可以填：have off.
A.正确
B.错误
[单选题]3. You _____ her in her office last Friday; she’s been out of town for two weeks.
A.needn’t have seen
B.must have seen
C.might have seen
D.can’t have seen
[单选题]88. At last, he couldn’t bear his wife’s _____ tongue any more.
A.violent
B.strict
C.sharp
D.anxious
[判断题]LED 信号机光源电路LED采用串并联形式。
A.正确
B.错误
[判断题]LED、开关显示必须由同种型号的LED\开关显示替换()
A.正确
B.错误
[单选题]LED信号机目测LED光点有无断点时，要求其断点不超过（ ）。
A.1/2
B.1/3
C.1/4
D.1/5
[单选题]当车站LED被不法分子入侵时，车站需至（ )房间内将LED屏断电。
A.A、专用通信设备室
B.B、民用通信设备室
C.C、配电间
D.D、照明配电室
[判断题]检查司机室终点站LED屏功能，LED屏显示正常，无乱码、无黑屏现象。
A.正确
B.错误
[判断题]当 VOBC 处于活动状态时，断联板卡所有的 LED 均显示为绿色，并且这些 LED 通常都为“亮”。
A.正确
B.错误
[判断题](36846)( )冲洗按钮为绿色LED指示灯。在冲洗过程中,LED指示灯恒亮。
A.正确
B.错误
[单选题]继电器机架上的LED报警系统中，如果LED的电流下降（），则系统将触发报警
A.0.2
B.0.25
C.0.3
D.0.35
