无机高效防水粉是由水硬性无机胶凝材料与______调合后具防水防渗性能。
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防水涂料施工时，涂层间的接茬，存每遍涂刷时应退茬50～100mm，接茬时应超过______mm，避免在搭接处发生渗漏。
A. 30～80
B. 50～100
C. 100～150
D. 150～200
快挥发性冷底子油，喷涂在终凝后的水泥基层上干燥时间为______h。
A. 2～4
B. 4～8
C. 1～2
D. 5～10
保温层设置存防水层______部时，保温层的上面应做找平层。
A. 上
B. 下
C. 侧而
D. 中
A tree can be considered as a kind of pump in the following two ways: ______.
A. Making the ground far more loosely made up and increasing the humidity of the surrounding land.
B. Sucking up water from the ground and increasing the humidity of the surrounding land.
C. Sucking up water from the ground and keeping the surrounding land drier.
D. Making the ground far more lorry made up and keeping the surrounding land much drier.
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