建立在施工期日常信息积累基础上的是( )的信息。
A．施工实施期B．施工准备期C．施工招标投标期D．竣工保修期
参考答案：D
砌一个圆柱形的水池，底面直径2.5米，深3米．在池的周围与底面抹上水泥，抹水泥的面积是多少平方米？
On a certain 10-question test, each question after the first question is worth 2 points more than the previous question. If the greatest number of points that can be scored on the test is 100, how many points is the eighth question worth ？（）
A．9
B．14
C．15
D．19
E．33
