皮皮学，免费搜题
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【单选题】
检查炽灼残渣时,生成的最终产物为()。A.
硫酸盐
B.
硫氰酸铁配位化合物
C.
硫化铅
D.
氯化银
E.
E、硫酸钡
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皮皮学刷刷变学霸
举一反三
【单选题】—The old store enjoys a good reputation in this area. —Can’t agree more. There are very few. _____, complains about their service.
A.
if any
B.
if ever
C.
if so
D.
if anything
【单选题】胎膜早破的病因不包括（）
A.
创伤
B.
子宫颈内口松弛
C.
妊娠后期性交，产生机械性刺激或引起胎膜炎
D.
下生殖道感染，可由细菌、病毒或弓形体等引起
E.
胎儿巨大
【单选题】If consumers think that there are very few substitutes for a good, then
A.
supply would tend to be price elastic.
B.
supply would tend to be price inelastic.
C.
demand would tend to be price elastic.
D.
demand would tend to be price inelastic.
E.
none of the above is true.