密封在氧气瓶中的氧气密度为6 kg/m3,当用去三分之二后,氧气瓶中氧气的密度 [ ]
A.仍为6kg/m3
B.变为4 kg/m3
C.变为2 kg/m3
D.无法判断
答案:C
简述《三国演义》“文不甚深,言不甚俗”的语言风格
In relation to the formation of a contract explain:
(a) the meaning of an offer; (5 marks)