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【单选题】
对于下列四种表述,不正确的是 (1)为了减小测量误差,称样量越大越好 (2)仪器分析方法因使用仪器,因此准确度高 (3)增加平行测定次数不能消 (4)做空白试验可消除系统误差除系统误差A.
1,2
B.
1,2,4
C.
1,3,4
D.
1,2,3
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【多选题】淀粉是由 [填空(1)] 聚合而成的多糖，均由α-1，4苷键联结而成的为 [填空(2)] 淀粉，除α-1，4苷键外，还有-1，6苷键联结的为 [填空(3)] 淀粉。其中较易糊化的为 [填空(4)] 淀粉。
A.
D-葡萄糖
B.
直链淀粉
C.
支链淀粉
D.
支链淀粉
【简答题】完形填空 (共 10 小题;每小题 1.5 分,满分 15 分) 从每小题所给的 A 、 B 、 C 三个选项中,选出可以填入空白处的最佳答案。 One day a young man Jeff asked a wise man why he wasn ’ t able to reach all of his goals. (36) a smile , the wise man listened ...
【单选题】I went to Professor Jayne, who listened to my arguments but remained unmoved. I decided to try harder, although I didn' t know what that meant because school had always been easy for me. I read the b...
A.
quarreled
B.
reasoned
C.
bargained
D.
chatted
【简答题】Twenty-two-year-old Timothy Doner from New York City has been able to speak 23 different languages, including some rare African ones. Timothy began his foreign language education at the age of 13. Att...
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