单项选择题
A.5块(300mm*150mm)B.5块(300mm*300mm)C.4块(300mm*150mm)D.4块(300mm*300mm)
A.稀释剂B.慢干助剂C.流平助剂D.接口水
A.2:2:1B.2:1:2C.1:1:1D.2:1:1