單項(xiàng)選擇題
A.2% B.3% C.4% D.5%
A.C10 B.C15 C.C20 D.C25
A.5~15 B.10~20 C.15~25 D.20~30
A.C20 B.C25 C.C30 D.C35
A.500~1000 B.700~1200 C.800~1400 D.1000~1500
A.1/3 B.1/2 C.2/3 D.3/4
A.100 B.120 C.150 D.200
A.2 B.3 C.4 D.5
A.二 B.三 C.四 D.五
A.500;500 B.750;750 C.1000;1000 D.1500;1500
A.防腐、防滑 B.防腐、防銹 C.防滑、防銹 D.防腐、防滑、防銹