多层螺旋与单层螺旋相比，最主要的优点是
A、探测器的排数增加C
暂无解析
脑黄金在医药、食品等行业中应用前景非常广泛，其化学式为C12H51COOH.下列对脑黄金的说法正确的是()
-Couldyoutellme_______?
-Untiltomorrowafternoon.
—Whichdoyoulike______,teaorcoffee?
—Acupoftea,please.
Therearefew_______inthefridge.Let’sgoandbuysomepeas，carrotsandcabbages.
------Whyareyousolate?Ihavewaitedformorethananhour.
--------_____.Igotuplateandmissedthebus.
