一台三相电力变压器,额定容量S=500KVA,额定电压U=10/0.4KV,高低压绕组均为Y连接,其低压侧的额
A 28.87A
B 721.7A
C 1250A
(提示30。5=1.732)
A 28.87A
B 721.7A
C 1250A
(提示30。5=1.732)
第1题
A、levered equity
B、unlevered equity.
C、riskless equity.
D、risky equity.
第3题
A.spur geared
B.screw geared
C.worm geared
D.belt driven
第4题
Congressional critics on the right and left have already geared up to ___ the IMF.
A、take aim at
B、 take it out of
C、 bring in
D、 buy out
第6题
The spur geared mooring winches have advantages over worm geared ones in .
A.higher efficiency of the gear train while reversing
B.the higher gear ratio
C.the multi-start feature
D.higher recovering speed
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