满载、超载开关一般安装在轿()梁上。
A、顶
B、底
参考答案:B
—Are there any _______ students in the classroom?
—No one _______.[ ]
A. other, else
B. else, other
C. else, else
D. other, other
乳剂由W/O转化成O/W的现象称为
A.分层
B.絮凝
C.转相
D.合并
E.破坏