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【单选题】
肠内营养最常见的并发症:A.
吸入性肺炎
B.
胃肠道并发症
C.
粘膜损伤
D.
喂养管阻塞
E.
代谢性并发症
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举一反三
【单选题】One important difference between DNA replication in prokaryotes and eukaryotes is that
A.
prokaryotes do not use enzymes in the replication process.
B.
there is only one replication origin in prokaryotes.
C.
there are no Okazaki fragments in prokaryotes.
D.
replication is conservative, not semiconservative, in prokaryotes.
【判断题】In semiconservative replication of DNA the two parental strands stay together and the two new daughter strands are produced.
A.
正确
B.
错误
【简答题】行程中,游客患一般疾病,地陪导游员应如何处理?
【简答题】已知某消费者每年用于商品1和商品 2的收入为540元,两商品的价格分别为P1=20元和P2=30 元,该消费者的效用函数为 ,该消费者每年购买这两种商品的数量应各是多少x1 = 、x2= ?每年从中获得的总效用是多少?
【简答题】第二章计算题 3. 已知某消费者每年用于商品1和商品2的收入为540元,两商品的价格分别为P 1 =20元和P 2 =30元,该消费者的效用函数为U=3X 1 X 2 2 ,该消费者每年购买这两种商品的数量应各是多少?从中获得的总效用是多少?
【单选题】DNA replication is termed semiconservative because ( ).
A.
only the bases are replicated
B.
the bases are replicated in small fragments
C.
only half the DNA molecule is replicated at any one time
D.
each new molecule has one strand from the original molecule
E.
the two stands of the molecule are replicated
【简答题】已知某消费者每年用于商品1和商品2的收入为540元,两种商品的价格分别为 P1=20 元, P2=30 元,该消费者的效用函数为 U=3X 1 X 2 ( 2 ) , 该消费者每年购买这两种商品的数量应该是多少?,每年从中获得的总效用是多少?
【简答题】模考作文+初稿写作日记 请文件放到同一个文档,文档以号数+姓名命名。
【单选题】DNA replication is termed semiconservative because ( ).
A.
only the bases are replicated
B.
the bases are replicated in small fragments
C.
only half the DNA molecule is replicated at any one time
D.
each new molecule has one strand from the original molecule
E.
the two st r ands of the molecule are replicated
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