()是指计算机在单位时间里处理计算机指令的数量。
A.字长
B.字节
C.主频
D.容量
参考答案:C
哌唑嗪:
A.α1受体阻断药
B.α2受体阻断药
C.二者均是
D.二者均否
If your vessel is dragging her anchor in a p wind,you should().
A.shorten the scope of anchor cable
B.increase the scope of anchor cable
C.put over the sea anchor
D.put over a stern anchor