以下哪个部件是ISBe发动机低压供油回路的组成部分()。
A、ECM冷却器
B、喷油器燃油连接管
C、水分离器和预滤清器
D、燃油滤清器
参考答案:A, C, D
— What's the matter with Jenny?
— She didn't pass the driving test but she still ________.[ ]
A. hopes so
B. hopes to
C. hopes it
D. hopes that
He devoted all the time _____ his research .
A.to do
B.doing
C.to doing
D.did