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【单选题】
下面关于核黄素的叙述哪项是错误的A.
化学名为7,8-二甲基-10-(D-核糖型-2,3,4,5-四羟基)异咯嗪。
B.
本品干燥时性质稳定,耐热性好,对大多数氧化剂稳定,但可被铬酸和高锰酸
C.
化。
D.
本品是碱性化合物,溶于酸不溶于碱。
E.
本品母核中N1和N5间有共轭双键,硫酸钠等强还原剂可生成不具荧
F.
二氢核黄素。
G.
本品用于治疗维生素B2缺乏造成的唇炎、舌炎、脂溢性皮炎等。
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举一反三
【判断题】Because “Tam O’Shanter” was written for a historical record of Scottish castles and churches, the story of it was factual.
A.
正确
B.
错误
【单选题】The written record of our conversation doesn’t ________ what was actually said. There are a lot of mistakes.
A.
correspond with
B.
relate to
C.
look into
D.
refer to
【单选题】To our puzzlement, the written record of our conversation doesn't ______ what was actually said. [ ]
A.
submit to
B.
correspond to
C.
contribute to
D.
cater to
【单选题】The operators must follow the ________ record instructions just as it is written.
A.
control
B.
written
C.
batch
D.
distribution
【单选题】The written record of our conversation doesn’t ______ what was actually said. There are a lot of mistakes．
A.
correspond with
B.
relate to
C.
compare with
D.
communicate with
【单选题】The written record of our conversation doesn’t ______ what was actually said. There are a lot of mistakes.
A.
correspond with
B.
relate to
C.
look into
D.
compare with
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