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【简答题】
已知樟脑的K f =40℃·kg·mol -1 ,熔点是178℃,取某有机物晶体0.014g与0.20g樟脑熔融混合,测定其熔点为162℃,求此物质的相对分子质量。
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参考答案:
举一反三
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trembling
B.
tremble
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to tremble
D.
to be trembling
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肖邦
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李斯特
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门德尔松
D.
德彪西
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坐、立、行走、读书、写字姿势端正。
B.
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举止文明、礼貌,态度和蔼,谈吐文雅。
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heavy carbon deposits will buildup on the valves and in the exhaust
B.
fuel dilution is increased at low load
C.
exhaust valves may be damaged
D.
all of the above
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particular
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specific
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peculiar
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general
【简答题】In a time of low academic (学术的) achievement by children in the United States, many Americans are turning to Japan, a country of high academic achievement and economic success, for possible answers. Ho...
【单选题】I seemed to be pretty good___ reading his lips after a while, even better than the nurses that were caring ___ him.
A.
at; for
B.
for; for
C.
at; about
D.
for; about
【单选题】In a time of low academic achievement by children in the United States, many Americans are turning to Japan, a country of high academic achievement and economic success, for possible answers. However,...
A.
Japanese parents are more involved in preschool education than American parents
B.
Japan's economic success is a result of its scientific achievements
C.
Japanese preschool education emphasizes academic instruction
D.
Japan's higher education is superior to theirs.
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