问题
多项选择题
水性涂料产品相对溶剂型涂料的优点有？（）
A.方便施工，银粉排列更均匀
B.遮盖能力更好
C.颜色调配更为准确，不同施工方法颜色差异小
D.水性涂料毒性小，喷涂时不用带防护口罩
答案
参考答案：A, B, C
搜题请搜索小程序“爱下问搜题”
水性涂料产品相对溶剂型涂料的优点有？（）
A.方便施工，银粉排列更均匀
B.遮盖能力更好
C.颜色调配更为准确，不同施工方法颜色差异小
D.水性涂料毒性小，喷涂时不用带防护口罩
参考答案：A, B, C
阅读短文，把A—D四个句子填入文中空缺处，使短文内容完整正确，然后完成小题。（5分） Computers can injure (伤害) you .Most other injures happen suddenly .___1___. Now learn to use a computer safely . Too much light can be bad for you eyes , so never sit too close to a computer screen .___2___ . This gives your eyes a rest . When we use a computer , the window should be on your left or your right . If it is behind you , the light will reflect ( 反射 )on the screen .That may hurt your eyes . Hand and wrist ( 手腕 ) injures can happen because the hands and wrists are moved in the same way hundreds of times .__ 3___,stop sometimes and exercise your hands ,wrists and fingers in a different way . If you sit in wrong way ,you can injure your back or your neck . ___4___. The top part of the screen should be in front of your eyes .
A. When you use a computer , the window should be in front of you . B. Computers ’injures happen slowly . C. The top part of the screen should be in front of your eyes . D. After using a computer for a long time ,you should exercise your hands ,wrists and so on. |