易然易爆物品仓库的大门应当向哪个方向开启?()
A.内
B.外
C.上
D.下
参考答案:B
In relation to the capital and fi nancing of a shareholding company:
(a) Explain the limitations on dividends that may be paid to shareholders. (3 marks)
二硫化碳主要存在于()。
A.初馏份
B.混合份
C.吹出苯
D.轻苯