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问题 单项选择题

压实填土地基的填料及施工要求中，下述（）说法不正确。（）

A.耕植土不得作为压实填土的填料

B.应通过试验确定分层填料的厚度及分层压实遍数

C.雨期施工时应采用防雨措施，防止出现橡皮土

D.粉黏性土作填料时，不必考虑其含水量

答案

参考答案：D

选择题

在一定温度下，用铂电极电解饱和硫酸钠溶液，对电解质溶液的判断正确的是(　　)

A．不会有晶体析出

B．浓度变大

C．浓度变小

D．pH不变
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单项选择题

（）is a method of constructing a project schedule network diagram that uses boxes or rectangles, referred to as nodes, to represent activities and connects them with arrows that show the dependencies.

This method includes following types of dependencies or precedence relationships:（）, the initiation of the successor activity, depends upon the completion of the predecessor activity.

（）, the initiation of the successor activity, depends upon the initiation of the predecessor activity.

（）, the initiation of the successor activity, depends upon the initiation of the predecessor activity.

A．F-S

B．F-F

C．S-F

D．S-S
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