在感抗X L =50Ω的纯电感电路两端,加正弦交流电压u=20sin(100πt+π/3) V,通过它的瞬时电流值为( )。
A.
i = 0.4 sin( 100 πt +π/3)A
B.
i = 20 sin( 100 πt -π/6)A
C.
i =0.4 sin( 100 πt -π/6)A
D.
i = 0.4 sin( 100 πt +π/6)A
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【简答题】Under the CFR term,the risk of loss of Or damage to the goods is transferred from the seller to the buyer when the goods pass the ship’s rail in the( ).
【单选题】Under the CFR term, the risk of loss of or damage to the goods is transferred from the seller to the buyer when the goods pass the ship’s rail in the ( ).