三相变压器绕组为D联结时,绕组相电流乘以 就等于()
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The ants, ________, have their times for play.
A. hardworking as are they
B. as they are hardworking
C. hardworking despite they are
D. hardworking as they are
I really don’t want to go tonight and I’m trying to _______an excuse.
A. think out
B. think about
C. think over
D. think up
In a word, we have no doubt ________ you are perfectly sound in mind and body.
A. that
B. when
C. what
D. whether
At least 76 people died when a Sibir Airlines Tu-154 ________ into the sea about 180kilometers from the Russian resort of Sochi on Thursday.
A. dropped
B. jumped
C. plunged
D. declined