无窗或固定窗扇的卤代烷和二氧化碳灭火系统的地上防护区，应设机械排风装置，排风口宜设在上部并应直通室外。
1、正确错误
暂无解析
Whattypesofpeoplewereincludedintheresearch?
-----Tinahadnothingforbreakfast,____________she?
-----_____________.Shehadsomebreadandmilk.
Manypeoplebelievethatscientificresearchshouldbecarriedoutandcontrolledbythegovernmentratherthanprivatecompanies.Towhatextentdoyouagreeordisagree?
Locatenursingcarefacilities
Shonahaslearntfromtheresearchprojectthat____.
