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问题 选择题

“我看见一座座山一座座山川，一座座山川相连，那就是青藏高原。”伴随着一曲《青藏高原》让我们走进唐朝 ，这时候生活在青藏高原的民族是 [ ]

A．鲜卑族

B．突 厥族

C．回纥族

D．吐蕃族

答案

答案：D

单项选择题

女性，34岁，上腹痛72小时，右下腹痛12小时，体温37.8℃，术前诊断急性阑尾炎行手术治疗，术中发现阑尾外观无明显异常，右髂窝内有淡黄色混浊液，应考虑原发病为（）

A.原发性腹膜炎

B.急性盆腔炎

C.阑尾黏膜化脓

D.右侧尿路结石

E.十二指肠球溃疡穿孔
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单项选择题

You are in charge of a stand-on vessel in a crossing situation.The other vessel is 1.5 miles to port.You believe that risk of collision exists.You should（）.

A.take avoiding action immediately upon determining that risk of collision exists

B.immediately sound the danger signal

C.take avoiding action only after providing the give-way vessel time to take action ,and determining that her action is not appropriate

D.hold course and speed until the point of extremis, and then sound the danger signal, taking whatever action will best avert collision
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