Most water ________ in Taiwan now do not contain fluoride.

单选题

Most water ________ in Taiwan now do not contain fluoride.

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单选题

When the water produced from most evaporator is supplied for drinking purpose, it must be treated to ensure it is biologically pure and ________. (237120:第2章船舶辅助机械:482)

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单选题

Contour elevations on this chart refer to heights in meters above mean ________ . A. lower low water B. high water C. low water

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单选题

____ for a long time, most of the crops in this area died from lacking water.

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材料题

should add at least an equal amount of water.When you are traveling on an airpiane,it is good to have 8 ounces of water for every hour you are on board the plane.4 It may be difficult to drink enough water on a busy day.Be sure you have water handy at all times by keeping a bottle for water with you when you are working,traveling,or exercising.If you get bored with plain water,add a bit of lemon for a touch of flavor.There are some brands of flavored water available,but some of them have sugar

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