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【单选题】
稳定DNa双螺旋结构的主要因素是A.
氢键和碱基堆积力
B.
肽键
C.
磷酸二酯键
D.
盐键
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反馈参考答案：
举一反三
【多选题】transition是包括如下哪些属性?
A.
transition-property
B.
transition-direction
C.
transition-timing-function
D.
transition-delay
【单选题】Harry thrives on two goods, paperback novels and bananas. The cost of paperback novels is 4 dollars each and the cost of bananas is 3 dollars per bunch. If Harry spent all of his income on bananas, he...
A.
36
B.
48
C.
9
D.
16
【多选题】What is the transition for HP now? (More than one answer)
A.
The transition is difficult for HP.
B.
The result of the transition is worse than they expected.
C.
People believe HP will thrive after the transition.
D.
Software is the DNA for HP.
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