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【多选题】
一栋18层的宾馆，高62米，设有两个防烟楼梯间，两部消防电梯，其中有一个防烟楼梯间和消防电梯合用一个前室。防烟楼梯间及其前室、合用前室均无外窗，且每层设有一条长40m，宽1.4m、无直接自然通风的内走道。请根据以上条件回答以下问题：机械加压送风系统应符合下列哪些要求（）。A.
防烟楼梯间的正压送风系统余压应为40Pa～50Pa
B.
合用前室的正压送风系统余压应为25Pa~30Pa
C.
合用前室应每层设一个送风口
D.
楼梯间和合用前室宜分别独立设置加压送风系统
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】呼吸性酸中毒是指
A.
血浆HCO3-?原发性增多使血液pH低于正常，PaCO2??升高的情况
B.
血浆HCO3-?原发性增多使血液pH低于正常，PaCO2??降低的情况
C.
血浆HCO3-?原发性增多使血液pH低于正常，PaCO2??正常的情况
D.
血浆HCO3-?原发性增多使血液pH低于正常，TCO2??降低的情况
E.
血浆HCO3-?原发性增多使血液pH低于正常，TCO2??正常的情况
【单选题】握手礼、点头礼、亲吻礼、鞠躬礼、合十礼、拱手礼、脱帽礼等多种多样的见面礼体现了礼仪的哪一种特征( )
A.
国际性
B.
民族性
C.
发展性
D.
继承性
E.
可操作性
F.
社会性
【简答题】阅读理解。 Millions of people pass through the gate of Disney's entertainment parks in California, Florida, Paris and Tokyo each year. What makes these places an almost universal attraction? What makes for...
【单选题】Millions of people pass through the gates of Disney's entertainment parks in California, Florida and Japan each year. What makes these places an almost an universal attention? What makes foreign kings...
A.
begin by receiving on-the-job training
B.
must learn several jobs
C.
begin as ticket takers
D.
have already attended Disney University
【单选题】By the fifteenth century, forks were used ______ .
A.
on in Constantinople
B.
all over Italy
C.
in England
D.
by the kings and queens of Europe
【单选题】Merricat's Castle is ( ).
A.
a place inhabited by kings and queens
B.
a private school for children from noble families
C.
a nursery school for all children
D.
a famous charity institution
【简答题】III. 改写下列各句,把黑体部分放在句首,并使主、谓语倒装。 1. The burial rooms for the kings and queens are inside the pyramids . ____________________________________ 2. I have seldom met such a brave man in all my life. ______...
【简答题】原发HCO3-升高
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