由非运价因素变化引起的运输需求曲线的移动,称为()。
A.运输需求量变动
B.运输需求变动
C.运输供给量变动
D.运输供给变动
参考答案:B
He made another wonderful discovery, ______ of great importance to science.
A.which I think is
B.which I think it is
C.which I think
D.I think which is
下列鼻咽癌的症状不包括()。
A.头痛
B.鼻堵
C.耳鸣
D.眩晕
E.面部麻木