【简答题】When the VMP is bolted directly to the vehicle body end via the outer array of through holes, the elastomeric seal is compressed and provides an automatic environmental seal.
【单选题】The hotel was awful!___, our room was far too small. Then we found that the shower didn't work.
【简答题】若 P(A) = 0.3, P(B) = 0.6, 则: (1) 若 A 和 B 独立,则 P(A+B) = ______, P(B – A) = ______; (2) 若 A 和 B 互不相容,则 P(A+B) = ______, P(B – A) = ______; (3) 若 A ⊂ B,则 P(A+B) = ______, P(B – A) = ______.
【简答题】若p(a)=0.3,p(b)=0.6 (1)若a与b独立,则p(a+b)=_,p(b-a)=_ (2)若a和b互不相容,则p(a+b)=_,p(b-a)=_
【简答题】若P(A)=0.3,P(B)=0.6,则(1)若A和B独立,则P(A+B)=_______,P(B-A)=(2)若A和B互不相容,则P(A+B})=______,P(B-A)=________;
【单选题】该污水处理厂采用反硝化深床滤池的目的是( )
【单选题】若A和B相互独立,P(A)=0.6,P(B)=0.3,则P(B|A)等于
【判断题】硝化细菌和亚硝化细菌是化能异养型微生物。