每支钢笔原价a元,降价20%以后的价格是______元.
∵钢笔原价a元,
∴降价20%以后的价格是(1-20%)a元,
故答案为;(1-20%)a.
Generally speaking, _______ graduate from ________ famous university is more likely to find a job.
A.a ; a
B./ ; the
C.the ; a
D.the ; the
欲平移同步发电机的外特性曲线,需改变()
A.调差系数的大小
B.调差系数的正负
C.发电机基准电压
D.强励倍数