机动往复泵的流量与排出压力之间的关系是排出压力变换,流量()。
A.波动
B.增大
C.减小
D.不受影响
参考答案:D
支气管动脉造影最常做()穿刺插管
A.股动脉
B.股静脉
C.肘动脉
D.肘静脉
E.肱动脉
In country after country, talk of nonsmoker’s right is in the air. While a majority of countries have taken little (51) no action yet, some 30 nations have introduced legislated steps to control smoking. Many laws have been introduced in other countries to (52) clear the air for nonsmokers, or to cut cigarette consumption.
Smoking is harmful (53) the health of people. World governments should conduct serious campaigns against it. (54) on cigarette advertisements, plus health warnings on packages and ban on public smoking in certain places, (55) as theaters, cinemas and restaurants, are the most popular tools used by nations in (56) of nonsmokers or in controlling smoking. But world attention is also focusing on another step (57) will make the smoker increasingly self-conscious and uncomfortable about his habit. Great efforts should be made to (58) young people especially of the dreadful consequences of taking up the habit. And cigarette price should be raised.
In the long run, (59) is no doubt that everybody would be much better-off if smoking were banned altogether but many people are not (60) for such drastic action.
54().
A.Restrictions
B.Leisure
C.Remarks
D.Layout