【单选题】设液压马达进油流量为Q(m3 /S),排量为q(m3/r),容积效率ηv为机械效率为ηm,其实际转速为 __ r/min。
【单选题】设液压马达进油流量为Q(m3 /S),排量为q(m3/r),容积效率ηv为机械效率为ηm,其实际转速为_______r/min。
【单选题】In selecting the host city, the IOC will consider several factors except ______ .
A.
the existing facilities of the city
B.
the competence of NOC of the city's country
D.
the financial profit by Olympics
【简答题】Several of the studies, which examined such factors as bone density and rate of fractures, concluded that exercises may be ______ increased calcium consumption in developing strong bones.
【单选题】The grow of home schooling is due to several factors EXCEPT_____.
【多选题】“一国两制”的关系是()
C.
“两制”从属和派生于“一国”,并统一于“一国”之内
D.
在“一国”之内,“两种制度”只有相互尊重、相互借鉴,才能和谐并存、共同发展