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【判断题】
液相色谱选择流动相时，不仅要考虑分离因素，还要受检测器的限制。()A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】___ we know, in a chemical change, energy cannot be created, ____.
A.
Which, nor can it be destoyed
B.
As, neither it can be destroyed
C.
As, neither is it able to be destoryrf
D.
What, nor is destoryed
【多选题】Water wheels are machines that use the energy of ______ to turn a wheel. The axle of the turning wheel can then power other machines to do work.
A.
flowing water
B.
or falling water
C.
or both
D.
neither of them
【单选题】下列表述正确的是()。
A.
对漫射表面，光谱吸收比等于光谱发射率
B.
吸收比等于发射率
C.
定向辐射强度与方向无关
D.
对于漫灰体，其吸收比不等于同温度下的发射率
【单选题】下面关于“六书”的说法，错误的是?
A.
六书是指汉字的六种造字方法:象形、指事、形声、会意、转注、假借。
B.
《说文解字》最早提出了汉字的造字规律——六书。
C.
象形者，画成其物，随体诘诎，日月是也。
D.
形声者，以事为名，取譬相成，江河是也。
【单选题】For a (n) ___________ system, neither matter nor energy can be transferred between system and surroundings.
A.
closed
B.
open
C.
isolated
D.
None of the above
【单选题】__ we know, in a chemical change, energy cannot be created, ____.
A.
Which, nor can it be destroyed
B.
As, neither it can be destroyed
C.
As, neither is it able to be destroyed
D.
What, nor is destroyed
【单选题】For a(n) system, neither matter nor energy can be transferred between system and surroundings.
A.
open
B.
closed
C.
none of the above
D.
isolated
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