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【单选题】
如图1-1-12所示,用完全相同的轻弹簧A、B、C将两个相同的小球连接并悬挂,小球处于静止状态,弹簧A与竖直方向的夹角为30°,弹簧C水平,则弹簧A、C的伸长量之比为图1-1-12 ( )A.
∶4
B.
4∶
C.
1∶2
D.
2∶1
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皮皮学刷刷变学霸
举一反三
【简答题】什么是SLOP程序?
【单选题】'Super savers' are the prices you gain
A.
when you change the plane
B.
when you book in advance
C.
when you take the full plane
D.
when the airline ask you for them
【单选题】The pollution prevention regulations state that slop oil and sludge that result as part of normal fueling operations should be disposed of by ____.
A.
discharging ashore into the sewer system
B.
sealing in disposable plastic barrels aboard ship
C.
discharging into a shore tank or stop barge
D.
dumping into the ship’s bunker tanks
【单选题】The pollution prevention regulation state that slop oil and sludge that result as part of normal fueling operations should be disposed of by _________.
A.
discharging ashore into the sewer system.
B.
sealing in disposable plastic barrels aboard ship.
C.
discharging into a shore tank or slop barge
D.
dumping into the ship’s bunker tanks
【简答题】大陆坡(continental slop)
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