The difference in water spray pattern between the high-velocity tip and low-velocity applicator used with the all-purpose nozzle is due to（）.
The pitch ratio of a propeller is the mean pitch divided by （）.
The purpose of the low pressure cut-out switch is to （）.
Mean high water is the average height of（）.
When distilling sea water the cooling water discharging from the distiller is fed back to evaporator as feed water （）.
The daily predictions of the times and heights of high and low water for a selection of Standard Ports are given in（）.
In an oil cooler circulated by sea water, the oil is at a larger pressure the result being that any leak in the cooler will mean a loss of （）.
In a general oil cooler circulated by sea water, the oil is at a higher pressure, the result being that any leak in the cooler will mean a loss of （）.
The difference between the heights of low and high tide is the（）.
The main difference between a motor control circuit containing low voltage protection and low voltage release is that the latter contains （）.
A large, low-speed, main propulsion diesel engine uses sea water to directly cool the （）.
The tide（）.It’s 2 hours before low water, and（）your present position you will be aground at low water.
There is（）water in the glass, is there?
Water transport is the（） way of shipping bulk and low price goods.
（）gives daily predictions of the times and heights of high and low waters for over 230 standard and 6，000 secondary ports in the world.
The purpose of the refrigeration system low pressure cutout switch is to （）
To assist separation of low viscosity oils steam coils or electric heaters are fitted （） of the oily water separator.
77. ______ water is the water in the hold to keep the ship's stability.
91. The mean draft of a ship is the draft _____.
254. Mean high water is the average height of ____
The fact that something is cheap doesn't ______ mean it is of low quality.
What does the saying low man on the totem pole mean？
"Grease the hand of " is used to mean（）.
After some water reducing agent is used into concrete, the function of the agent is（）if some water is reduced
