混凝土工程按施工工艺可分为现浇混凝土和预制混凝土两大类
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沥青混凝土适用于堆石坝、砂壳坝的心墙、斜墙及匀质坝的上游防渗工程等。
A. 对
B. 错
碾压混凝土浇筑包括配料、混凝土加温、铺筑、养护、模板制作、安装、拆除、修整及场内运输及辅助工作
A. 对
B. 错
各类混凝土浇筑的计量单位均为建筑物及构筑物的半成品实方体。
A. 对
B. 错
There are many ways to conclude the essay. How does the author end his essay?
A. Restating the main points previously mentioned.
B. Proposing a solution.
C. Quoting from some book or person.
D. Predicting future developments.
E. Making a suggestion in the form of a question.
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