A:to like
B:likes
C:like
已知4x-5y+2z=0x+4y-3z=0(xyz≠0),则x:y:z的值为( )
The company won the bid for the project by saying that it would do the cleaning up afterwards ________.
以下肺泡适于与血液进行气体交换的特点,不正确的是( )
如图所示,清洁车匀速行驶,将水不停地洒在地上.下列有关说法错误的是( )'