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【单选题】
下列药物中不属于中枢性镇咳药的是A.
咳必清
B.
桔梗
C.
可待因
D.
退嗽
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反馈参考答案：
举一反三
【单选题】永久作用是指在结构设计使用期间，其作用值（）
A.
一直不变
B.
基本不随时间而变化或其变化与平均值相比可以忽略不计的作用
C.
在结构上具有固定分布的作用
D.
随时间而变化的作用
【单选题】What function does the first sentence in the second paragraph serve?
A.
It further explains the theory of utilitarianism.
B.
It forms a contrast to general cases of utilitarianism.
C.
It acts as the connecting link to bring up the theme.
D.
It gives an example to explain utilitarianism in particular cases.
【单选题】What point does the professor make about the snow that forms a glacier?
A.
It is conserved.
B.
It is light and fluffy.
C.
It is denser than ice.
D.
It is very dirty.
【单选题】To what rights does the Declaration of Independence say all men are entitled?
A.
Life，liberty and pursuit of happiness．
B.
of Speech and Press．
C.
of Thought and Education．
D.
Abolishing all evil forms
【多选题】Look at this picture, what forms of personal protective equipment(个人防护装备) does the man use?
A.
gloves
B.
overalls
C.
face shields
D.
goggles
E.
respirators
【简答题】What does the sentence "Forms and patterns meant nothing" (para. 8) reveal about the outlook of the frontiersmen?
【单选题】What does the author mean by “benign forms of convenience”?
A.
Useful function
B.
Reading apps
C.
Reference tools
D.
Search features
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