大风浪中抛八字锚时，两锚的张口应：（）
A.迎风向
B.背风向
C.迎流向
D.背流向
参考答案：A
Could you tell me _______?
A．whose the pen on the desk belongs to
B．why spend so much time on games
C．whether he’ll come back next week
D．what should I do with the problem
张力性气胸最有力的诊断依据是（）
A.广泛皮下气肿
B.心率增快
C.穿刺有高压气体冲出
D.气管移位
E.呼吸困难
