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【单选题】
原子吸收光谱法中物理干扰可用下列哪种方法消除?A.
标准加入法
B.
保护剂
C.
释放剂
D.
扣除背景
拍照语音搜题，微信中搜索"皮皮学"使用
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【简答题】The phrase 'ring up sales' (Sentence 2, Para.2) most probably means ______.
【简答题】FOR USE ONLY IN CASE OF FIRE________________________________
【单选题】For which type that Empson talked about the double entendre?
A.
the third
B.
the fifth
C.
the seventh
D.
the second
【判断题】The strong axiom of revealed preference requires that if a consumer chooses x when he can afford y; and chooses y when he can afford z; then he will not choose z when he can afford x.
A.
正确
B.
错误
【简答题】“Target”in Paragraph 2 most probably means_________
【单选题】In paragraph 2, 'it is not a far stretch to believe that' is most similar in use to______.
A.
it is sometimes believed that
B.
the most likely conclusion is that
C.
it logically follows that
D.
it is not unreasonable to believe that
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