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【单选题】
有关酶活性中心的叙述,哪一项是错误的A.
酶活性中心往往是一些疏水性的 “ 口袋 ”
B.
酶与底物通过非共价键结合
C.
底物的分子远大于酶分子，中间产物
D.
底物分子可诱导活性中心构象变化
E.
活性中心可适于底物分子结构
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反馈参考答案：
举一反三
【单选题】下列哪种形式的注释可以被Java文档生成工具javadoc自动识别并提取？（ ）
A.
// ……
B.
/* …… */
C.
/** …… */
D.
//* …… */
【单选题】(I) Prices of longer - maturity bonds respond more dramatically to changes in interest rates. (II) Prices and returns for long - term bonds are less volatile than those for short - term bonds.
A.
(I) is true, (II) false.
B.
(I) is false, (II) true.
C.
Both are true.
D.
Both are false.
【单选题】Bonds that are purchased with the intent of selling them in the near future to take advantage of short-term price changes are classified as:
A.
Securities available for sale.
B.
Trading securities.
C.
Consolidating securities.
D.
Held-to-maturity securities.
【单选题】Since yield curves are usually upward sloping, the ________ indicates that, on average, people tend to prefer holding short-term bonds to long-term bonds.
A.
market segmentation theory
B.
expectations theory
C.
liquidity premium theory
D.
both A and B of the above
E.
both A and C of the above
【单选题】患者,男,20岁,2小时前打篮球时出现左下腹剧烈疼痛,向尿道口和大腿内侧放射,伴恶心呕吐。尿常规示红细胞+++,根据病情首先应予以治疗的措施是
A.
止吐
B.
解痉、止痛
C.
急诊手术
D.
控制感染
E.
大量饮水，保持尿量
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