风险衡量的指标是（）。
A.损失概率
B.损失大小
C.损失范围
D.损失程度
E.损失幅度
参考答案：A, E
My sister asked me to go there by train, because the train ticket is ______ the plane ticket. [ ]
A. as cheap three times as
B. as three times cheap as
C. three times cheaper than
D. cheaper three times than
全预应力混凝土是指在使用荷载作用下容许混凝土承受应力甚至出现微细裂缝。( )
