外伤性头皮血肿指的主要是（）
A.头皮下血肿
B.帽状腱膜下血肿
C.骨膜下血肿
D.颞肌下血肿
E.硬膜外血肿
参考答案：A, B, C
---- I’d like to buy a ticket to Tokyo. Are there any tickets left?
---- _______. I’ll check it for you right now.
A．Could you wait a minute, please?
B．I don’t know
C．All right.
D．I’m sorry there is none left.
整合矿井设计能力不低于（）。
A、0.6mt/a
B、0.8mt/a
C、1.0mt/a
