下列关于工业建筑通风机选型原则，哪一项是错误的?
A、通风机风量应在系统计算风量的总风量上附加风管和设备的漏风量D
暂无解析
____thecenterofourplanetarysystemwasconsideredasheresybythechurchintheMiddleAges.
Everymeans____triedoutbutneverwithsuccess,asfarasmyknowledgegoes.
That’s________excitingnewsthatI’dliketotelleveryonetosharethejoy.
Thesmallmountainvillagewas（）bythesnowformorethanonemonth.
Marytiptoedoverandtooktheclockawaybecauseshehatedtohearit（）whenshewastryingtogotosleep.
