CRH1A型动车组IDU的系统--高压界面上,受电弓图标显示红色边框,表示()。
A.已升弓
B.降弓(或状态不明)
C.有故障并降弓
D.切除并降弓
参考答案:C
下面那一地区不适宜使用“一国两制”政策( )
A.台湾
B.深圳
C.澳门
D.香港
Gold which is 10 Karats in proportion ______ in the U.S.
A.represents the highest grade of gold
B.cannot be sold
C.never carries a Karat quality mark
D.represents the lowest-grade gold marketable