正常小儿的喂养,每次哺乳的时间是
A.产后15min~2hB.产后1h~2hC.产后2h~4hD.5min~15minE.15min~20min
参考答案:E
核小体串珠状结构的珠状核心蛋白是()。
A.H2A,H2B,H3,H4各1个分子
B.H2A,H2B,H3,H4各2个分子
C.H1组蛋白以及140-145碱基对DNA
D.非组蛋白
E.H2A,H2B,H3,H4各4个分子
The man,suspected________having stolen the jewels of the shop,was missing last night,although he was watched over by the police.[ ]
A.of
B.for
C.about
D.with