腐殖质胶体带可变电荷,其带电量比带永久电荷的矿质胶体小。
参考答案:错
After he was promoted to the present position, he is not so hardworking as he ______.
A.was used to
B.used to be
C.was used to being
D.used to
依据我国《企业所得税法》的规定,企业所得税的征税对象不包括( )。
A.企业每纳税年度的生产、经营所得
B.企业每纳税年度的股息所得
C.企业每纳税年度的转让各种财产的所得
D.企业高级管理人员的股息所得