能够支持燃烧的气体是________,它的分子是由_________构成的。
氧气(O2);原子(氧原子)
In relation to employment law distinguish between and explain the meaning of:
(c) wrongful dismissal. (2 marks)
肠结核的主要感染途径是()
A.经口
B.经淋巴管
C.经血液循环
D.腹腔病变直接蔓延
E.腰椎病变直接蔓延