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【单选题】
不属于服用性质量指标的是A.
起球性
B.
抗静电性
C.
舒适性
D.
锁水性
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皮皮学刷刷变学霸
举一反三
【单选题】The solider made a hole in the wall, ______ he could see what was going on inside the cabin.
A.
on which
B.
at which
C.
through which
D.
in which
【简答题】体细胞中 DNA分子的复制过程是在__________________期进行的;生殖细胞中DNA分子的复制过程是在__________________期完成的。
【简答题】根据体型大小,贵宾犬分为 、 、 三种类型。
【单选题】The man who had fallen into the hole failed to answer any questions because he ______.
A.
had one of his legs broken
B.
was busy changing the axle
C.
had drunk too much wine
D.
was afraid to blame anybody
【简答题】下图为真核细胞DNA复制过程模式图，请根据图示过程，回答问题。 (1)由图示得知，1个DNA分子复制出乙、丙2个DNA分子，其方式是__________。 (2)DNA解旋酶能使双链DNA解开，但需要细胞提供__________。除了图中所示酶外，丙DNA分子的合成还需要________酶。 (3)从图中可以看出合成两条子链的方向是___________。 (4)细胞中DNA复制的场所______...
【单选题】42 He knows ______ a lot more than Wagner ______ be able to pick a hole in his work offhand.
A.
such ... as to
B.
so ....as to
C.
such ...so as to
D.
too...as to
【单选题】The hiding man made a hole in the wall ______ he could observe the outside. [ ]
A.
in which
B.
by which
C.
through which
D.
with which
【单选题】下图是某大肠杆菌细胞内DNA分子复制的过程，图中①②③④表示不同的脱氧核苷酸链。下列叙述正确的是（）
A.
该过程所需要的能量是由线粒体提供的
B.
该过程所需要的解旋酶是在核糖体上合成的
C.
若①某位点上的碱基为A，则④相应位点上的碱基为T
D.
若②的一个碱基发生了替换，则一定会引起生物性状的改变
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