对采用后向叶片式离心风机的通风系统的特性描述,下列哪几项是正确的?()
AC
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Notallbirdscanfly,______doallbirdsbuildnests.
WhatareIreland'schiefexports?
In“SongofMyself”,Whitmanwritesthat________.
改写病句:Peterorderedthemealforhisfriendsrangingfromfriedshrimptochoppedbeef.
ThelargestandsmalleststatesoftheUnitedStatesare________.