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【简答题】
对称三相负载作Y连接，接在三相四线制电源上。此时负载端的相电压等于 )倍的线电压;
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举一反三
【单选题】If you really have to leave during the meeting, you’d better leave _________ the back door.
A.
for
B.
by
C.
across
D.
out
【单选题】---- May we leave the classroom now? ---- No, you _____. You _____ to leave until the bell rings.
A.
mustn’t, are allowed
B.
can’t, aren’t supposed
C.
don’t have to, are supposed
D.
needn’t, aren’t allowed
【单选题】Do remember to __________the lights before you leave. If you leave them _______, the boss will be angry with you. [ ]
A.
turn on, on
B.
turn down, off
C.
turn off, off
D.
turn off, on
【单选题】— Can I leave this door open at night? — You _______ better not.
A.
should
B.
would
C.
could
D.
had
【多选题】下列项目中通过其他货币资金账户核算的有:( )
A.
取得有本企业开户银行签发的银行本票
B.
本企业签发的有开户银行承兑的商业汇票
C.
取得有本企业开户银行签发的银行汇票
D.
取得由购货单位签发并承兑的商业汇票
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