在倾斜巷道内，启动车辆行车时，应（）。 A.先挂档后松手闸 B.先松手闸后挂档 C.

It was John’s quick action and knowledge of first aid that saved Ms Slades’s life. He immediately asked __1__ for bandages, but when nobody could __2__, his father got some tea towels and tape from their house. John used these to treat __3__ to Ms Slade’s hands. He slowed the bleeding by __4__ until the police and __5__ arrived.

女，28岁，反复咯血半月余，CT检查如图，最可能的诊断是（）

A.肺结核

B.肺癌

C.间质性肺炎

D.支气管扩张

E.肺脓肿

（）的灰分Ad>40%。

A.低质煤

B.粒级煤

C.洗选煤

D.原煤