砂浆含气量两次测的绝对误差不大于()时,取两次测值的算术平均值作为砂浆的含气量
A.2%
B.10%
C.0.2%
D.1%
参考答案:C
Pan-Pan repeated three times over the radiotelephone indicates which type of message will follow?()
A.distress
B.safety
C.all clear
D.urgency
已知某新技术应用方案的投资额为100万元,年工程成本为20万元,基准投资收益率为12%,则该方案的折算费用为( )万元。
A.32.00
B.102.40
C.266.67
D.853.33