搬运器(或载车板)停车表面端部与出人口地面结合处的水平距离应不大子40mm.垂直高度应不大于()mm.
A、20
B、30
C、50
D、80
参考答案:C
Brussels, the capital city of Belgium, is ________ home to the European Union, ________ organization of European nations. [ ]
A. the; an
B. a; an
C. 不填; an
D. 不填; the
下列选项中,属于CRT显示器性能指标的有()
A.频响范围
B.点距
C.屏幕尺寸
D.屏幕分辨率