_________surprises us most is that she doesn’t even know _________the difference between the two lies.

A．What; where

B．All; which

C．What; that

D．That; where

检修后的离心泵在启动前可用手或其他工具盘动转子，以确认转动灵活，动静部分无卡涩或摩擦现象。