抢救受伤人员需要保险公司垫付抢救费用时,有责需提供()
A、抢救费用担保函
B、伤者误工证明
C、交警责任认定书
D、抢救费用垫付通知书
参考答案:C, D
—Is Nick coming by train?
—He should, but he ________ not. He likes driving his car.
A.must
B.may
C.can
D.need
试述电控发动机燃油系统的组成及汽油流动过程。