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【判断题】
建设单位在成本加酬金合同中承担了项目的全部风险。A.
正确
B.
错误
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举一反三
【单选题】糖的纸色谱中常用的显色剂是
A.
Molisch试剂
B.
苯胺-邻苯二甲酸试剂
C.
Keller-Kiliani试剂
D.
醋酐-浓硫酸试剂
E.
香草醛-浓硫酸试剂
【简答题】按照SDH中复用线路可以看出,1个STM-1可以包含()个140M,可以包含()个34M,()个2M。
【单选题】Shakespeare wrote at least thirty-seven plays, ______ showed his knowledge on various subjects.
A.
which
B.
/
C.
that
D.
what
【单选题】Shakespeare wrote at the end of the __________ and the beginning of the __________ century. This was the period of the English Renaissance.
A.
14th, 15th
B.
15th, 16th
C.
16th, 17th
D.
17th, 18th
【单选题】20(S)-原人参二醇()
A.
能与Molisch试剂呈阳性反应
B.
能与Liebermann-Burchard试剂呈阳性反应
C.
在254nm紫外光下有强吸收
D.
在13C-NMR波谱图上可见羧基信号峰
【简答题】William Shakespeare was born in 15 in England. At school，he liked watching plays. He decided to be an actor when he finished school at the age of 14. At 28, he moved to London and joined a theater c...
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