在温度低于0℃的钢材构件上涂刷防腐涂层前，应进行什么试验？
参考答案：应进行涂刷工艺试验。
用括号内所给单词的适当形式填空:5分
小题1:The blue __________(knife) are on these tables.
小题2:At Halloween children enjoy ________（paint) their faces.
小题3:Now many children like eating _______ (potato) chips.
小题4:Amy usually sleeps ______ (little) than seven hours every night.
小题5:First we clean our classroom, then __________. (they)
被称为"美洲的古希腊"的是（）。
A.墨西哥
B.玛雅
C.安第斯
D.亚特兰蒂斯
