主动脉狭窄时的左室功能改变下述何者是错误的() A.早期心肌肥厚,随后心肌扩张 B.

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问题:

主动脉狭窄时的左室功能改变下述何者是错误的()

A.早期心肌肥厚,随后心肌扩张

B.左室功能较好者的体循环阻力改变对SV影响甚小

C.轻、中度狭窄病人的CO、SV及肺血管阻力正常

D.心衰时应用洋地黄可改善心肌收缩力

E.一旦出现症状病情迅速恶化

考点:北京住院医师麻醉科Ⅰ阶段麻醉科麻醉科题库
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假设某企业2008年的生产条件属于社会平均水平。生产一种甲种的劳动耗费为6元,产量为10万件。2009年该企业的劳动生产率提高50%。其他条件不变。那么,该企业生产甲种商品的个别价值、社会价值和价值总量分别为[ ]

A、4元、4元、60万元

B、6元、8元、90万元

C、4元、6元、90万元

D、8元、6元、120万元

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在大接地电流系统中,发生单相接地故障时,电网中任何支路的故障相电流是三倍零序电流。

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Listening to your heart

Do you ever wish you had a road map for living? If only someone could    1    show us a way to go, a direction to take, we wouldn’t feel so    2    of which path to pursue. We think that, with only a little    3    , we’ll surely end up in the right place.

4     on a regular flight from Detroit to Tri-City Airport must have felt a little more than    5     during the flight attendant’s greeting as their flight started. She     6     the passengers and stated that the destination would be Midland. A few concerned passengers   7    her, so the flight attendant, obviously not familiar with the area,     8     herself by saying that they would be     9      in “Tri-City” and Bay City.

Chuckles rippled along the aisle as she    10    tried again. This time she informed passengers that the destination would be Saginaw. Now    11    broke out.

At that point, an authoritative voice came over the intercom (对讲机) and    12     her. “I’m your pilot, folks,” he said. “Don’t    13   — I know where we’re going.”

It’s nice when someone knows the     14    . And there is wisdom in seeking help when necessary. Other people can be valuable.    15     we cannot always depend on others for the    16    answers for living our lives. In the end, nobody can point us to all the best   17    for life’s problems; nobody else can    18    us to the path that is just right for us. We find that way ourselves. We find the way by    19   . Listening to our hearts — for the direction we need is almost always there, deep within.

So if you feel a bit lost, don’t worry. This may be a    20    time to listen. And remember — your pilot knows where you’re going.

1. A. irregularly          B. occasionally        C. practically         D. basically

2. A. proud              B. tired              C. unsure            D. ashamed

3. A. guidance        B. encouragement      C. comfort           D. determination

4. A. Customers          B. Pilots             C. Attendants         D. Passengers

5. A. happy              B. lost               C. nervous           D. excited

6. A. thanked            B. examined           C. welcomed         D. entertained

7. A. reminded           B. informed           C. warned           D. threatened

8. A. relaxed             B. behaved            C. enjoyed          D. corrected

9. A. stopping            B. landing             C. flying           D. traveling

10. A. shyly              B. impatiently          C. bravely          D. actively

11. A. protest            B. complaint           C. argument         D. laughter

12. A. rescued            B. blamed             C. praised           D. defended

13. A. fight              B. worry               C. quarrel           D. concern

13. A. flight              B. skill                C. way              D. problem

15. A. So                 B. And                C. Besides          D. But

16. A. immediate          B. important           C. simple           D. short

17. A. solutions           B. reasons            C. explanations       D. accounts

18. A. direct              B. force              C. forbid            D. tempt

19. A. speaking           B. following           C. listening          D. asking

20. A. hard               B. spare              C. necessary         D. perfect

题型:单项选择题

集体演练要求队形整齐,动作一致。可以变换队形,但不能配乐。

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当司机预感到所吊运的荷载对地面人员的安全有威胁时应发出()音响信。

A.一短音

B.二短音

C.连续短音

D.长音

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