题目内容
（请给出正确答案）
A.will be modulated in proportion
B.will be modulated in proportion and integral
C.will be modulated in proportion and differential
D.will not be modulated at all
简答题官方参考答案
（由简答题聘请的专业题库老师提供的解答）
更多“The water level of an exhaust gas boiler which is independent of the auxiliary boiler and”相关的问题
The water level showing in a boiler water gauge glass is usually () duringworking.
A.higher than the actual drum water level
B.equal to the actual drum water level
C.increasing due to steam condensation in the glass
D.lower than actual drum wafer level
The meaning of ebb tide is that ______.
A.tide is falling from high water to low water
B.tide is rising from low water to high water
C.tide is reaching to a highest level
D.tide is reaching to a lowest level
Black smoke coming from a boiler can be caused by _____.
A.low water level
B.high water level
C.excessively high fuel pressure
D.low oil temperature
How should you adjust the water level when cooking the rice？
According to your own _________________.
A.mean sea level
B.mean high water
C.mean low water
D.half-tide level
The word "trophallaxis” is closest in meaning to ______.
A．the level of water in the nest
B．the common stomach of the colony
C．the exchange of fluids on meeting each other
D．common social insects
听力原文： The water level of oceans rises and falls alternatively twice a day. This movement of water is called the tide. Tides are caused by the pull of the sun and the moon on the earth's surface; since the moon is much closer, it affects the tides more than the sun. When the moon is directly overhead, it actually pulls on the water that is below it. This causes the water level to rise because the water is pulled away from the earth. As the moon disappears over the horizon, the pull lessens and the water level settles back towards the ocean bottom.
When the water reaches its highest level, we have high tide. And when the water reaches its lowest level, we have low tide. From its lowest point, the water rises gradually for about six hours until it reaches high tide. Then it begins to fall continuously for about six hours until it reaches low tide. Then the cycle begins again.
(23)
A．Every other day.
B．Twice a week.
C．Twice a day.
D．Only during the summer.
A.mean high water
B.mean low water
C.half-tide level
D.mean sea level
The situation of arsenic in water causing diabetes is worsened by______.
A．the scarcity of water resources
B．the limited access to medicines
C．the level of arsenic in water
D．type 2 diabetes worldwide
A.A.rising
B.B.rise
C.C.rised
D.D.rose
A.a level controller
B.a temperature switch
C.a pressure switch
D.a floating ball
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