举一反三
- No unfit actually faced with water scarcity ____ appreciate the value of water to a region. A: one can B: one cannot C: can one D: cannot one
- DNA polymerase probably synthesizes in the 5'→3'direction because A: that is the opposite direction of the replication fork B: that is the only way it can bind to DNA C: that allows synthesis to resume easily if one base needs to be removed D: this is the only direction permitted by the double helix
- That is the only way we can imagine_______ (reduce) the waste of water in the bathroom.
- ______ claimed that “the dignity of movement of an ice-berg is due to only one eighth of it being above water”.
- Taking hollow fiber membrane module as an example, according to the way of water inflow, it can be classified as outside-in type: raw water enters from the outside of membrane, and purified water flows out from the inside of membrane. On the contrary, it is inside-out type. The working pressure of the inside-out type is higher than that of the outside-in type.
内容
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Water is __________ (必要的) to maintain life, but only one percent of the water on the whole planet can be used for drinking.
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Taking hollow fiber membrane module as an example, according to the way of water inflow, it can be classified as outside-in type: raw water enters from the outside of membrane, and purified water flows out from the inside of membrane. On the contrary, it is inside-out type. The working pressure of the inside-out type is higher than that of the outside-in type. A: 正确 B: 错误
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Which of the following is a steel structure building? (There is only one correct answer to this question) A: The building, beams and columns are reinforced concrete, the roof and walls are profiled steel plate B: The building, beams and columns are hot rolled steel, walls are masonry block C: The building, beams and columns are timber, walls are masonry block D: The building, beams and columns are bamboo, walls are masonry block
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轴线不能多个复制，只能单个复制。One only can copy axis one by one and cannot realize multiple times.
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Trees can give you a ______ of direction when you are lost. ( ). A: lot B: help C: way D: sense