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【判断题】
The firm in monopolistic competition produces where its marginal cost equals its price.A.
正确
B.
错误
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皮皮学刷刷变学霸
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【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.
【简答题】In normal, straight-ahead driving, the drive shaft turns the drive pinion, which turns the ring gear. The ring gear turns the entire differential case because it is bolted solidly to the case . Since ...
【单选题】已知P(A)=0.3, P(B)=0.6。(1) 若A和B相互独立,则P(A+B)=0.72; (2) 若A和B相互独立,则P(B-A)=0.42;(3) 若A和B互不相容,则P(A+B)=0.9;(4) 若A和B互不相容,则 P(B-A)=0.6。以上事件概率计算结果正确的是
A.
仅(1)和(2)
B.
仅(1)和(2)、(3)
C.
仅(1)
D.
(1)、(2)、(3)和(4)
【单选题】The flywheel is bolted to the _____on the rear end of the crankshaft.
A.
tail
B.
central
C.
flange
D.
top
【单选题】The cylinder ______ is bolted to the top of the cylinder block.
A.
gasket
B.
piston
C.
cover
D.
head
【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)=________；
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