每一种涂料中均含有的成分是()
A.树脂
B.颜料
C.溶剂
D.添加剂
参考答案:C
下述( )不算机械制造中的工艺过程。
A.包装
B.锻压
C.热处理
D.锻造
He had no choice but to go on because it is their agreement that no one ______ quit the plan half way.
A.need
B.will
C.shall
D.can