提速道岔断相保护器DCBHQ输入电流为交流()。
A、0.5A~2A
B、1A~3A
C、1A~3.5A
D、1A~4A
参考答案:C
Recently our government policymakers are very ________ about the rapidly rising food costs.[ ]
A.upset
B.confused
C.concerned
D.conscious
论 * * 组织形式的重要意义?