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【简答题】

完形填空 I took up skydiving in my twenties.At the time the accident happened, I'd done just 30 jumps.The airfield was quiet when I __ 1 __.On board were Chris, who was taking a tourist, and Ants, the cameraman.Chris indicated I should exit first and the other three would __ 2 __.Later I knew it was this __ 3 __ that saved my life. At 12,000 feet Chris rolled up the door and nodded that it was time for my exit.I put my foot on a step just beside the door, and in a(n) __ 4 __ the propeller blast (螺旋桨气流) threw me against the __ 5 __ of the plane, half in, half out.I pushed and got my other leg out of the door, but in doing so I found myself __ 6 __ the body of the plane towards the tail.My parachute (降落伞) got caught and my __ 7 __ and legs were pushed backwards, powerless, in the strong wind. I was strangely __ 8 __.To a skydiver, being at 12,000 feet is a good thing.Altitude is your friend; being close to the ground is deadly and will kill you. Ants appeared and __ 9 __ slowly towards me, his legs held by Chris in the door.Ants reached out and got  hold of my foot.With the weight partly off, I found myself falling away from the plane, __ 10 __ freed.I waved and smiled to indicate I was fine. It was actually very __ 11 __.If any one of a number of factors had been different, I would have __ 12 __.I could have hit the plane with my head.If I had been the last to exit, the pilot alone would have been unable to free me, and even if he had been aware that I was __ 13 __ underneath the plane, he would still have had to land at some point. Blue Skies, Black Death is the skydivers' mantra (咒语).On the one hand, there's the and __ 14 __ of the open sky.But in order to __ 15 __this joy, you must accept that there is usually only one result if something goes wrong. (     )1. A. jumped (     )2. A. follow (     )3. A. trouble (     )4. A. minute (     )5. A. left (     )6. A. sliding down (     )7. A. body (     )8. A. frightened (     )9. A. ran (     )10. A. really (     )11. A. funny (     )12. A. died (     )13. A. attached (     )14. A. pride (     )15. A. observe B. arrived B. escape B. effort B. way B. right B. knocking over B. arms B. anxious B. moved B. hopefully B. ordinary B. laughed B. adjusted B. confidence B. experience C. woke C. leave C. chance C. instant C. top C. crashing into C. head C. excited C. stepped C. certainly C. clear C. stopped C. covered C. excitement C. imagine D. dove D. fly D. decision D. sense D. side D. leaning against D. fingers D. calm D. rushed D. finally D. serious D. returned D. connected D. willingness D. discover

题目标签:降落伞螺旋桨
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【单选题】165使用螺旋桨技术最主要的目的是

A.
降低人体射频能量的积累
B.
保证了图像的时间分辨力
C.
减少运动伪影
D.
减少带状伪影
E.
降低SNR

【单选题】螺旋桨桨叶扭转的目的是()。

A.
使从桨根到桨叶尖各剖面的的桨叶迎角基本相同
B.
使从桨根到桨叶尖的拉力大小基本相同
C.
使从桨根到桨叶尖的桨叶角大小基本相同

【单选题】螺旋桨推力功率THP为()。

A.
船舶主机发出的功率与传递效率的乘积
B.
螺旋桨发出的推力与螺旋桨进速(对水)的乘积
C.
螺旋業发出的推力与船速(对水)的乘积
D.
船舶阻力与船速的乘积