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【判断题】
气相色谱分析中,混合物能否完全分离取决于色谱柱,分离后的组分能否准确检测出来,取决于检测器A.
正确
B.
错误
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举一反三
【单选题】Wang Ling, one of my friends, is very good at English. He speaks English as if he ________ an Englishman.
A.
were
B.
would be
C.
have been
D.
had been
【简答题】A．In a pharmacology course B．From her mother C．At the student health center D．From her doctor
【简答题】阅读资料1～3，针对资料中提到的“高考移民”的问题，发表自己的见解，并提出解决问题的建议。 [要求] 观点明确，条理清晰，针对性强，不超过500字。
【单选题】On the way to the school cinema, Wang Ling saw Professor Black walking to the cinema, too. Wang Ling said,
A.
“Good morning, Professor Black.”
B.
“Are you going to the film?”
C.
“Where are you going?"
【单选题】下列式子中哪一个式子不能用来计算色谱柱的理论塔板数? ( )
A.
( t R /σ ) 2
B.
16( t R / W b ) 2
C.
5.54( t ' R / W 1/2 ) 2
D.
16( t ' R / W b ) 2
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