安全行车的基本经验表明,保持车辆良好的(),是安全行车的前提条件和重要因素。A、技术

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问题:

安全行车的基本经验表明,保持车辆良好的(),是安全行车的前提条件和重要因素。

A、技术状况

B、动力性

C、经济性

D、通过性

考点:汽车驾驶员考试汽车驾驶员初级工考试汽车驾驶员初级工考试题库
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音频线缆的分布电容越大,其线缆阻抗值越大。( )

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Do you play a musical instrument? If so, you may be getting smarter. A recent study shows that taking music lessons can raise a person’s IQ.

Scientists studied 132 children in Canadian schools. At the beginning of the school year, these children took an IQ test. Then they were divided into four groups. One group took singing lessons. Another group took weekly piano lessons. The third group took classes in drams(戏剧). And the last group did no special activities at all.

At the end of the school year, the 132 children took an IQ test again. In all four groups, the average score went up. However, the piano players’IQs went up 7.0 points on average. The average increase for the other three groups was only 4.3 points.

The researchers say that the difference is small and it may not result in better grades for the piano players. However, they still consider the results important. Learning an instrument helps kids becomes better at concentrating and at memorizing things. Therefore, the researchers say, it may be good for brain development in young people.

If you have a chance to learn to play a musical instrument, never miss it. Remember it can make you smarter.

小题1: Which of the following is NOT true of the study?

A.It was done in Canada.

B.It was done by some musicians.

C.It included four groups of children.

D.It took one school year to complete.小题2: Which of the following is true?

A.Average IQ scores increased in all the groups.

B.Only the piano players’ IQs increased.

C.The average increase for all four groups was 4.3 points.

D.Most of the children’s IQs did not go up.小题3: The underlined word “they” in the passage refers to ______.

A. better grades

B.piano players

C.researchers

D.instruments小题4: What’s the main idea of the passage?

A.It’s good for us to listen to music.

B.Everyone should learn to play the piano.

C.Take an IQ test before you learn instruments.

D.Learning instruments may make kids smarter.

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患者,男性,60岁。慢性肺心病患者,近10余天来受凉后出现病情加重,神志欠清,发绀、躁动、痰不易咳出。双肺呼吸音低,可闻及干湿性啰音。白细胞计数及分类增高。

若血气分析结果为PaCO270mmHg,PaO255mmHg,pH7.56,BE+23mmol/L,HCO348mmol/L则应该考虑()

A.呼吸性酸中毒

B.呼吸性酸中毒+代谢性酸中毒

C.呼吸性酸中毒+代谢性碱中毒

D.代谢性碱中毒

E.呼吸性碱中毒+代谢性酸中毒

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女,28岁,足月顺产后6个月,哺乳期、月经尚未复潮,无慢性肝、肾疾患。

前来咨询采用适合的避孕措施放置宫内节育器,下列哪些情况不会发生()

A.子宫穿孔

B.子宫内膜炎

C.带器妊娠

D.宫内节育器脱落

E.乳汁分泌减少

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病原菌侵入机体后不会出现哪种情况

A.细菌不可能再排出体外

B.获得免疫

C.发病

D.不发病

E.隐性病原携带者

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