【单选题】离心式压缩机中将气体的动能转化为静压能的部件是()。
【单选题】离心式压缩机中将气体的动能转化为静压能的部件是()。
【单选题】根据企业所得税法律制度的规定,下列收入中,可以免征企业所得税的是()。
【单选题】Which of the following best states the feature of American education that makes it different from education in other countries?
A.
The large number of its schools.
B.
The variety of the courses offered in its schools.
C.
Its special consideration given to immigrants.
D.
Its underlying goal to develop every child's abilities to the fullest extent.
【多选题】根据企业所得税法律制度的规定,符合条件的非营利组织取得的下列收入中,免征企业所得税的有( )。
【简答题】生物界共有( )个密码子,其中( )个位氨基酸编码,起始密码子( ); 终止密码子为( )、( )、( )。