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在卫星海洋遥感中，卫星高度计有何应用？

答案

参考答案：

卫星高度计主要用于测量平均海平面高度、大地水准面、有效波高、海面风速、海流、重力异常、降雨指数等。

多项选择题

处方：维生素C104g，碳酸氢钠49g，亚硫酸二钠2g，依地酸二钠0.05g，注射用水1000ml。

关于维生素C注射液，叙述错误的是（）

A.碳酸氢钠用于调节等渗

B.亚硫酸氢钠用于调节pH

C.依地酸二钠为金属螯合剂

D.在二氧化碳或氮气流下灌封

E.本品可采用115℃、30分钟热压灭菌

F.本品应作热源检查
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单项选择题

B


Waste can be seen everywhere in the school. Some students ask for more food than they can eat and others often forget to turn off the lights when they leave the classroom. They say they can afford these things. But I don’t agree with them.
Waste can bring a lot of problems. Although China is rich in some resources (资源), we are short of(缺乏) others, for example, fresh water(淡水). It is reported that we will have no coal (煤) or oil to use in 100 years. So if we go on wasting our resources, what can we use in the future and where can we move Think about it. I think we should say no to the students who waste things every day. Everybody should stop wasting as soon as possible.
In our everyday life, we can do many things to prevent waste from happening, for example, turn off the water taps (水龙头) when we finish washing, turn off the lights when we leave the classroom, try not to order more food than we need, and so on. Little by little, everything will he changed. Waste can be stopped one day, if we do our best.

Which is not mentioned in this passage ( )

A．Fresh water.

B．Forest.

C．Oil.

D．Coal.
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