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【简答题】
什么叫机械制造?机械制造技术有哪些?
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【简答题】单相桥式整流电路中,已知变压器 副绕组电压为110V,负载电阻为2kΩ,则二极管通过的平均电流等于( )。
【单选题】he needed money for a new car, he decided not to borrow it from the bank.(1998)
A.
Much as
B.
Much although
C.
As much
D.
Though much
【单选题】he needed money for a new car, he decided not to borrow it from the bank.
A.
Much as
B.
Much although
C.
As much
D.
Though much