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【单选题】
以下能使颈动脉压力感受器兴奋的因素是A.
阻断颈动脉血流
B.
由卧位变为立位
C.
外周阻力降低
D.
动脉血压降低
E.
压迫颈动脉
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【简答题】扁桃体肿大的分度
【判断题】Decide whether the following statements are true or false according to Text B. The ironies are that annual losses in export earnings in most West African cotton-producing countries are comparable to U...
A.
正确
B.
错误
【单选题】短文 3 It is one of nature’s great ironies that the availability of nitrogen in the soil frequently sets an upper limit on plant growth even though the plants leaves are bathed in a sea of nitrogen gas....
A.
That of a farmer whose crops have failed because the normal midseason rains did not materialize and no preparations for irrigation had been made.
B.
That of a long-distance runner who loses a marathon race because of a wrong turn that cost him twenty seconds.
C.
That of a motorist who runs out of gas a mere five miles from the nearest gas station.
D.
That of shipwrecked sailors at sea in a lifeboat, with one flask of drinking water to share among them.
E.
That of travelers who want to reach their destination as fast and as cheaply as possible, but find that cost increases as travel speed increases.
【简答题】忽报人间曾伏虎,————————。出自《蝶念花.答李淑一》
【简答题】“忽报人间曾伏虎”中“伏虎”的意思是指( )。
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