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【多选题】
色谱分析中内标法适用于()样品的分析A.
需要较复杂的前处理过程的
B.
量难以精确控制的
C.
组分复杂出峰不完全的
D.
色谱条件常会发生微小变化的
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举一反三
【简答题】Listen carefully and fill in the blanks with the exact words you have just heard . 1. A gunman has killed (1) people and wounded another 53 at a gay nightclub in Orlando, Florida. It was the worst (2)...
【简答题】. 对于多孔性的催化剂,分子扩散很复杂,当孔径较大时,扩散阻力是由 _______ 所致。
【单选题】His comments during the interview ____ many secrets covered by the government.
A.
revealed
B.
reveals
C.
revealing
D.
reveal
【简答题】Shaquille O'Neal is probably the best professional basketball player in American history. In the NBA, he is always the most dominant player. But did you know that he also has many critics? Although he...
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