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【单选题】
多粘菌素B的抗菌作用机制是A.
影响细菌胞浆膜通透性
B.
与核蛋白体50S亚基结合,阻止肽链延长
C.
与核蛋白体30S亚基结合,阻止蛋白质合成
D.
抑制以DNA为模板的RNA聚合酶
E.
以上都不是
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【单选题】听力原文： [32] New England is an area of mountains, valleys, and rivers. It is said that in New England [32] one is always climbing hills. A large part of New England is also made up of farms and farming ...
A.
It is completely flat.
B.
It has few rivers.
C.
It has many large lakes.
D.
It is hilly.
【单选题】England is not a big country: from north to south and from east to west it is only about three hundred miles across. But for a small country it has a surprising range of climate. People who have never...
A.
one hundred miles
B.
threes hundred miles
C.
one hundred and fifty miles
D.
six hundred miles
【简答题】_________是业务领域的需求中可用软件实现的部分,它是业务系统的一个子集。
【单选题】England is not a big country: from north to south and from east to west it is only about three hundred miles across. (76) But for a small country it has a surprising range of climate. People who have ...
A.
one hundred miles
B.
three hundred miles
C.
one hundred and fifty miles
D.
six hundred miles
【单选题】听力原文： New England is an area of mountains, valleys, and rivers. It is said that in New England one is always climbing hills. A large part of New England is also made up of farms and farming lands. Yet...
A.
It is completely flat.
B.
It has few rivers.
C.
It has many large lakes.
D.
It is hilly.
【单选题】England is not a big country: from north to south and from east to west it is only about three hundred miles across. But for a small country it has a surprising range of climate. People who have never...
A.
one hundred miles
B.
three hundred miles
C.
one hundred and fifty miles
D.
six hundred miles
【简答题】Sports is very popular in England . In other words lots of English people like the idea of sport. A lot watch sport on TV. But the number who takes part in sport is quite small. On the whole English p...
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