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【单选题】
混凝土的塑性收缩是指_____。
A.
混凝土硬化初期水泥石凝固结硬过程中产生的体积变形
B.
混凝土终凝后内部自由水分蒸发而引起的变形
C.
混凝土在不受外力情况下的体积变化产生的变形
D.
混凝土在水中或潮湿的环境中结硬过程中产生的体积变形
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】People who do sleep research tell us that a person is a sort of "information processor." We have two ways to use the information we get each day. The first process is used when we are awake. It takes...
A.
people are likely to sleepwalk
B.
people become mentally active
C.
people often wake up
D.
people might do odd things
【单选题】子宫收缩力异常指的是
A.
节律性、极性、强度均不正常
B.
节律性、对称性正常但失去正常强度
C.
对称性、极性正常，节律性异常
D.
节律性正常，对称性和极性异常
E.
节律性、对称性、极性及宫缩的频率和强度均异常