晶闸管导通后控制极电源线脱落，将产生的现象是（）。
A．晶闸管截止
B．流过阳极的电流减小
C．流过阳极的电流增大
D．流过阳极的电流不变
参考答案：D
--Were you surprised by the ending of the film?
--No. I _____ the book, so I already knew the story.[ ]
A. was reading
B. had read
C. would read
D. has read
英译汉：“bill of lading；L／C；consignor”，正确翻译为( )。
A．信用证；提单；发货人
B．信用证；提单；收货人
C．提单；信用证；收货人
D．提单；信用证；发货人
