When reversing, the tidal stream will have a period with little or no effect. This is call the_____.

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• In a radial piston pump, reversal and control of fluid flow are accomplished by moving the （）.

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• In a river subject to tidal currents，the best time to dock a ship without the assistance of tugs is（）.

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• The reversing cams of some four-stroke/cycle diesel engines are brought into position by （）

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• The total starting air capacity required for reversible main engines is to be sufficient for at least （）.

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• The distance between the surface of the water and the tidal datum is the （）.

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• 194. The tidal height is ____.

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• A tidal wave caused by the earthquake hit the coast and caused _________damage.

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• The sentence that reversion is the movement of Dao means that things always turn to its opposite when they reach the extreme.

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• The distance between the surface of the water and the tidal datum is the______．

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• Why is the change in Australias immigration policy called a reversal？

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• The author s attitude toward reversing the high-speed trend is

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• There is a reversible reaction at equilibrium. Which of the following statement is true？

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• That the person whothe call pays for the call is a reverse charge call.____

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