which of the folllwing means"与..成正比"
A.be charged;
B.slide over;
C.in accordance with… ;
D.in proportion to…;
正确答案是D
which of the folllwing means"与..成正比"
A.be charged;
B.slide over;
C.in accordance with… ;
D.in proportion to…;
正确答案是D