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问题 选择题

同无性生殖相比，有性生殖产生的后代具有更大的变异性，其根本原因是[ ]

A．基因突变频率高

B．基因组合机会增多

C．产生许多新的基因

D．更易受环境影响而发生变异

答案

答案：B

单项选择题

Larry Purcell, an entry-level fixed income analyst at Knowhon & Smeades LLC, was discussing debt covenants with his supervisor, Andy Holzman. During the meeting Purcell made the following statements regarding bond covenants: Statement 1: If a firm violates any of its debt covenants, the company will immediately go into bankruptcy and the creditors of the firm will take over the liquidation of its assets. Statement 2: Debt covenants are important in evaluating a firm’ s credit risk and to better under-stand how the restrictions of the covenants can affect the firm’ s growth prospects and choice of accounting policies. Are statements 1 and 2 .s made by Purcell regarding bond covenants correctStatement 1 Statement 2 ①A. Correct Correct ②B. Incorrect Incorrect ③C. Incorrect Correct

A．

A. ①

B．

B. ②

C．

C. ③
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单项选择题 A1型题

肝经风热易出现（）。

A.胞睑红肿

B.目眦赤烂

C.白睛黄染

D.全目赤肿

E.眼胞赤烂难愈
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