7.泉州在历史上被称为“天下之货仓”这个货指物质上的丰富。
A、正确
B、错误

A.可不设二沉池
B.实现了生物固体平均停留时间与污水的水力停留时间的分离
C.膜组件中，膜材料常用反渗透膜
D.膜生物反应器分好氧和厌氧两大类

A．He brings him to the race-course and together they gaze into the starry night sky
B．He brings me to the wilderness to look at the stars
C．He holds him in his arms and comforts him
D．He invites him over to his house and makes him herbal tea

A.不考虑润滑油问题
B.应考虑满液式蒸发器回油和压缩机出口润滑油分离问题
C.应考虑压缩机吸气管回油问题
D.应考虑蒸发器、压缩机吸气管回油和压缩机出口润滑油分离问题