发动机前安装点轭形环上的三个减震器:()A.可以互换使用,因为结构作用一样 B.可以

题型:单项选择题

问题:

发动机前安装点轭形环上的三个减震器:()

A.可以互换使用,因为结构作用一样

B.可以互换使用,因为彼此频率相同

C.不可以使用,因为各自大小不同

D.不可以互换使用,因为各自的吸收震动的频率不同

考点:航空发动机装配工航空发动机装配工题库
题型:单项选择题
Jim is the son of a farm owner. One New Year's Day, when he was 15 years old, his father        him to work on the farm for one year at his free time. Jim was        with his father's idea. 'That isn't my job. I have         schoolwork to do. ' At hearing this, his father said, 'I promise(答应) to give you the best present if you       finish one year's work. , Jim thought for a while and       . Starting one Saturday, the boy got up early and worked       until evening, just like any other farmer. Time passed      . Jim's crops grew very well. On the last day of the year, the father called his son to him, 'I'm happy to see that you have worked very hard the whole year,' said the father, Now, tell me       you want.' The boy smiled and showed his father a big piece of bread made from his wheat. 'I've already got the       present. No pains, no gains. I think this is what you wanted me to       .
小题1:
A.askedB.invitedC.promisedD.helped
小题2:
A.happyB.unhappyC.excitedD.familiar
小题3:
A.a fewB.so littleC.too muchD.too many
小题4:
A.shallB.mustC.needD.can
小题5:
A.refusedB.answeredC.agreedD.began
小题6:
A.hardB.hardlyC.easilyD.difficultly
小题7:
A.fastB.quicklyC.slowlyD.immediately
小题8:
A.thatB.whichC.howD.what
小题9:
A.leastB.worseC.bestD.smallest
小题10:
A.decideB.likeC.takeD.know
题型:单项选择题

以下哪种情况是洋地黄适用证

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B.风心病,心衰,快速房颤

C.肥厚梗阻型心肌病

D.高度房室传导阻滞

E.急性心肌梗死

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