一进程在某一时刻具有( )。
A．一种状态 B．两种状态C．三种状态 D．四种状态
参考答案：A
The score _____ higher in our team's favor, but for some excellent goalkeeping by Simon from our rival. [ ]
A. had been
B. could have been
C. was
D. will have been
钢筋混凝土受弯构件，《公桥规》规定必须进行使用阶段的（）。
A.变形和弯曲裂缝最大裂缝宽度验算
B.变形验算
C.弯曲裂缝最大裂缝宽度验算
D.应力计算
