单项选择题
When oily water separator is operating, which measure （） is wrong.
A.pay attention to operating parameters B.renew and clean separating units in time C.check oil level in separator to prevent overload D.check separating effect, if it is bad, flush with large capacity water pump
单项选择题 The following measures can be used to improve oily water separator’s separating effect except （）
单项选择题 If separating effect is not good, which measure should be taken （）
单项选择题 If separating effect is not good, we can improve it by （）
