影響勞動生產率的因素是多方面的，從大的方面講主要有勞動力人數和()。
A、勞動力熟練程度D
暫無解析
PartIVTranslation
Itwouldhavebeendifficultforthemtoavoidtheconclusionthatthehorseandmulepopulationwoulddeclinerapidly.(PassageFour)
關于枕前位分娩機轉，下列哪些不正確?
PartIVTranslation
Thepersonalservicetheyprovideissodeep-rootedinJapanthattheyarelikelytooperatealongsidetheglitteringnewshowrooms.(PassageThree)
初產婦第二產程不能超過
I’mworriedabouttheappearanceofthefloor.Ineedto_____it.
