钢筋按其外形的不同有( )。
A．光面钢筋
B．螺纹钢筋
C．人字纹钢筋
D．肋纹钢筋
E．月牙纹钢筋
参考答案：A,B,C,D
Which of the following share repurchase methods most likely result in the lowest cost to the company
A. Buy in the open market.B. Buy a fixed number of shares at a fixed price.C. Repurchased by direct negotiation.
下列不属于变配电工程组成的是（）。
A、桥架
B、裸母线
C、母线槽安装
D、电缆敷设
