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【单选题】
下列对乙醚蒸馏操作中正确的加热方式是A.
用煤气灯直接加热支管烧瓶
B.
用2kW电炉直接加热支管烧瓶
C.
用水浴间接加热支管烧瓶
D.
用电热板间接加热支管烧瓶
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【单选题】Reading Poem No poem should ever be discussed or 'analyzed', until it has been read aloud by someone, teacher or student. Better still, perhaps, is the practice of reading it twice, once at the beginn...
A.
to discuss it with others
B.
to analyze it by oneself
C.
to hear it read out
D.
to practice reading it aloud
【简答题】钢轨温度是指钢轨的锁定温度。()
【简答题】The following is about poem reading: A line is not necessarily a 1 . Some poems are like singing of personal 2 (emotions/experiences). Some are 3 (narrative/expository). Read a poem once 4 (silently/l...
【简答题】钢轨磨耗主要是指钢轨的( )磨耗和( )磨耗
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