为避免硬盘受振动,硬盘工作时不要搬动主机。( )
参考答案:对
按期权所赋予的权利的不同,可将期权分为()。
A.看涨期权
B.看跌期权
C.欧式期权
D.美式期权
—Why are most of us unable to study English well,Mr.Li?
—You ______.But you ______ too little attention to it.
A.could;pay
B.will;attach
C.would;refer
D.can;devote