题目内容

醛固酮的作用是

A. 保钠排钾
B. 保钾排钠
C. 保钾保钠
D. 排钾排钠
E. 以上都不是

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______适用于会议讨论重大决策事项。

A. 决议
B. 决定
C. 通知
D. 意见

Comment on the sentence "structural stability of idioms is absolutely unchangeable" and explain the reasons.

现在认为第一线降压药是

A. α1受体阻断剂
B. 钙拮抗剂
C. 中枢降压药
D. 交感神经抑制剂
E. 直接扩血管药

He is as poor as a church mouse. Pick out the idiom in this sentence, then point out its structure, grammatical function and figure of speech.

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