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问题 单项选择题

血液在体循环和肺循环中流动的共同规律是（）

A.心室→动脉→毛细血管→静脉→心房

B.心室→静脉→毛细血管→动脉→心房

C.心房→动脉→毛细血管→静脉→心室外

D.心房→静脉→毛细血管→动脉→心房

答案

参考答案：A

单项选择题

闭目难立征的临床意义正确的是（）

A.后索病变睁眼稍不稳，闭眼更明显

B.小脑病变睁眼站立较稳，闭眼时不稳

C.前庭迷路病变闭眼出现身体摇晃，经一段时间后稳定

D.睁眼时稍不稳，闭眼更明显即为闭目难立征阳性

E.闭目难立征阳性患者指鼻试验睁眼时可正常
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单项选择题

A small fuel spillage has occurred during helicopter refueling. After the leak has been stopped and fire-control personnel have been notified and are standing by，the next step is to（）.

A.proceed with fueling operation

B.have helicopter move to a safer location

C.wash spilled fuel away with a flood of water

D.clean spilled fuel with rags
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