()in this area is prohibited.
A.Fish
B.Fishing
C.Fisher
D.Fishery
参考答案:B
白血病宜用()
A.高蛋白膳食
B.少渣膳食
C.两者均是
D.两者均否
设x∈(0,1),证明: (1)(1+x)ln2(1+x)<x2; (2)
.