【单选题】现代社会上有着数万种职业,下面说明了职业具有多样性的句子是( )。
【单选题】现代社会上有着数万种职业,下面说明了职业具有多样性的句子是 ( )
【单选题】现代社会上有着数万种职业,下面说明了职业具有多样性的句子是( )。
【单选题】Atmosphere 1.The atmosphere is a mixture of several gases. There are about ten chemical elements which remain permanently in gaseous form. in the atmosphere under all natural conditions. Of these perm...
D.
The composition of the permanent gases in the atmosphere.
E.
The suspension of dust
F.
Tropophere Paragraph 2 ______
【简答题】the atmosphere选择As_____________ as men leave the atmosphere [A] soon [B] well [C] much [D] possible
【单选题】管理间应采用外开( )级防火门,门宽大于( )m。选( )