It is requested that the reporter ____ to blame for the wrong report.

A．referring to

B．referring to as

C．referred to be

D．referred to being

洗衣机脱水桶是利用______的原理制成的机械，将衣服放在洗衣机的甩干桶内，当甩干桶高速旋转时，衣服也随之旋转，当水的附着力______（填“大于”、“小于”或“等于”）圆周运动所需要的向心力时，衣服上的水滴就被甩出．