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【单选题】
某病人55岁,绝经6年,阴道不规则流血1个月收入院。体形肥胖,尿糖(+)。妇科检查:外阴阴道萎缩不明显,宫体稍大,软,活动度好,附件(-)。若该病人的疾病已经发生转移,其最常见的转移途径是( )A.
淋巴转移
B.
血行转移
C.
腹腔转移
D.
直接蔓延
E.
医源性操作转移
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【单选题】下列关于别构酶的叙述，哪一项是错误的?( )
A.
所有别构酶都是多聚体，而且亚基数目往往是偶数
B.
别构酶除了活性部位外，还含有调节部位
C.
亚基与底物结合的亲和力因亚基构象不同而变化
D.
亚基构象改变时，要发生肽键断裂的反应
E.
酶构象改变后，酶活力可以升高也可以降低
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