题目内容
(请给出正确答案)
[主观题]
A hydraulic machine is one that uses _____ to do work.A.liquidB.steamC.gasD.electricity
A hydraulic machine is one that uses _____ to do work.
A.liquid
B.steam
C.gas
D.electricity
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A hydraulic machine is one that uses _____ to do work.
A.liquid
B.steam
C.gas
D.electricity
第1题
A.As long as
B.As far as
C.As well as
D.Unless
第2题
A.length increases
B.cross-sectional area increases
C.temperature increases
D.percent of metallic purities increases
第3题
A.control air system
B.forced draft air system
C.supply air system
D.ships service air system
第4题
A.nuts
B.bolts
C.coil springs
D.stuffing boxes
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