【判断题】【消耗次数：1】
气相色谱和液相色谱是依据固定相的状态来分类的。
①
正确
②
错误
参考答案：
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相关题目
【单选题】
下列气相色谱操作条件中，正确的是
①
载气的热导系数尽可能与被测组分的热导系数接近
②
使最难分离的物质在能很好分离的前提下，尽可能采用较低的柱温
③
实际选择载气流速时，一般低于最佳流速
④
检测室温度应低于柱温，而气化温度愈高愈好
【单选题】
高效液相色谱的主要部件包括
①
高压输液系统、分光系统、色谱分离系统、检测器
②
载气系统、进样系统、色谱分离系统、检测器
③
高压输液系统、原子化装置、色谱分离系统、检测器
④
高压输液系统、进样系统、色谱分离系统、检测器
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Nanjing is a city with many places of interest. ________ tourists come here every year.
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Thousand of
②
Thousand
③
Thousands
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Thousands of
【单选题】
1.—Howlongisthenewbridge?Doyouknow?—Yes.Itsabout______.
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one thousand one hundred and eighty meters
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one thousand and one hundred fifty meters
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two thousands one hundred forty meters
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two thousands seventy and three meters
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which
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one
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but
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all
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this
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that
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it
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the one
【单选题】
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another
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the others
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the other
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the rest
【单选题】
7. --Did______ of your parents come to attend the openingceremony? --_______ of them came.
①
None
②
Neither
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either; Neither
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both; None
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2.—Daddy,whichofthesesmarthatsdoyoulikebestinthehatshop?—_____.Theyarebothexpensiveandlesswarm-keeping.
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Either
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Nothing
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Neither
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None
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1.DoyoureallybelievethatMrWhitehasblamedusfortheaccident,especially_______?
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you and me
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I and you
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you and I
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you and we
【单选题】
6. His earliest plays are excellent, but his latest one is __________.
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something
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everything
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anything
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nothing