使用腻子前，必须在缝隙中涂刷一道与配制腻子相应的防锈漆，并且干燥后才能腻缝。
参考答案：对
—Are there any English story books for us students in the library? —There are only a few, ______.
A．if any
B．if have
C．if some
D．if has
按照作业特点进行分类，装卸搬运可以分为哪些基本类型？
