[求助]A Question

hazard

___ efficiently depends on the manner in which the fuel is injected into its cylinder

A) A diesel engine works
C) Whether a diesel engine works.......

ANS:  C.............why can't choose A ?

linda

要分析句子的主谓结构.
该句的主语是个whether 引导的从句,谓语是depends on
如果选A, 句子就有两个谓语了,works 和depends on,是不合语法的.
试翻译:
柴油机是否能有效地工作依赖于燃料注入油缸的方式.

我有我可以

简单的说就是主语从句~