碳素钢丝具有很好的( )，是生产刻痕钢丝和钢绞线的母材。
A．生物化学性能
B．化学性能
C．力学性能
D．可塑性能
参考答案：C
Bob bought his phone several years ago and it is _____ now. He is going to buy a new one. [ ]
A. out of style
B. in style
C. on board
D. at least
“衍射型行政”
