活动式拦污栅安装对栅体检查项目有栅体间连接应牢固可靠,栅体在栅槽内升降灵活、平稳无卡阻。
参考答案:对
Everything is all right, ______? [ ]
A. is 'it
B. are they
C. aren't they
D. isn't it
注射剂澄明度检查有色溶液时,装置的光照度应为
A.1 000~2 000lx
B.2 000~3 000lx
C.3 000~4 000lx
D.4 000~5 000lx
E.500~1 000lx