问题 问答题

指出压力单位“兆帕”与“千帕”、“兆帕”与“公斤力”、“帕”与“毫米水柱”之间的关系?

答案

参考答案:1MPa=1000kPa

1kgf/cm2=0.1MPa

1mmH2O≈10Pa

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Breakfast is very important. It is one of the most important(最重要的) 小题1: of the day. To keep healthy, everyone should 小题2:  a good breakfast.小题3:  the right food is necessary for good health. We may have eggs, bread, milk  小题4: breakfast.

Many students go to school without breakfast 小题5: they get up late or their parents don’t cook for them. It’s  小题6: for their health.

 小题7:2 breakfast children may not grow fast and may not study and play very well at school. They may 小题8: . And when they’re ill, they will 小题9: a long time in recovering (恢复).

I think everyone should have some good   小题10: habits. It is necessary.

小题11:A. meal               B. meals             C. dinner

小题12:A.to have             B. have              C. has

小题13:A.Eating              B. Eats              C. Eat

小题14:A.in                  B. on               C. for

小题15:A.because             B. so                C. but

小题16:A.good               B .bad               C. better

小题17:A.Without             B. With             C. Not have

小题18:A.ill                  B .are ill            C .be ill

小题19:A.spend              B. take              C .make

小题20:A.health               B .healthy            C. bad

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