生产设备信息报送工作网由（）级组成。
A.省、地
B.省、地、县
C.网、省、地、县（区）
D.其它
参考答案：C
Ms Liu saw a fashion dress in a shop which set her heart racing. However, its price was far beyond her _______.
A．range
B．certainty
C．reach
D．contact
SS6型电力机车的换长是（）。
A.1.9
B.2.0
C.2.1
D.2.8
