No matter how low you consider yourself , there is always someone ___ you wishing they were that high.

A．getting rid of

B．getting along with

C．looking up to

D．looking down upon

在GS8800e数字调速系统中，调速器在某种原因损坏的情况下，主机仍能维持在原先的油门开度下运转。这些可能的损坏情况包括（）。

A.主机起动故障

B.交流三相供应电压故障

C.应急供电装置故障

D.全船总电源故障