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【单选题】
单糖分子中的醛基或者酮基和另一个分子的()反应生成半缩醛。
A.
羟基
B.
烷基
C.
氨基
D.
醛基
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【简答题】Cross-border E-commerce
【单选题】角钢大小可用号数表示,其数值表示角钢的边长,单位为cm,如3号角钢表示边长为( )的等边角钢。
A.
30mm
B.
3mm
C.
300mm
【单选题】角钢大小可用号数表示,其数值表示角钢的边长,单位为cm,如3号角钢表示边长为()mm的等边角钢。
A.
30
B.
3
C.
300
【单选题】Which one of the following is the first cross-border e-commerce comprehensive pilot area in China?
A.
Hangzhou Cross-Border E-Commerce Comprehensive Pilot Area
B.
Shanghai Cross-Border E-Commerce Comprehensive Pilot Area
C.
Beijing Cross-Border E-Commerce Comprehensive Pilot Area
D.
Chengdu Cross-Border E-Commerce Comprehensive Pilot Area
【多选题】Which of the following are among the second group of Cross-border e-commerce comprehensive pilot areas?
A.
Hangzhou Cross-border E-commerce Comprehensive Pilot Area
B.
Shanghai Cross-border E-commerce Comprehensive Pilot Area
C.
Chengdu  Cross-border E-commerce Comprehensive Pilot Area
D.
Tianjin Cross-border E-commerce Comprehensive Pilot Area
【单选题】角钢大小可用号数表示,其数值表示角钢的边长,单位为cm,如3号角钢表示边长为mm的等边角钢。
A.
30
B.
3
C.
300
D.
150
【单选题】角钢大小可用号数表示,其数值表示角钢的边长,单位为cm,如3号角钢表示边长为()的等边角钢。
A.
30mm
B.
3mm
C.
300mm
【单选题】以下关于压疮的误区错误的是( )
A.
气垫圈
B.
局部按摩
C.
90度翻身
D.
气垫床
【简答题】cross-border e-commerce
【简答题】Cross-border E-commerce (1) 1. Introduction to Cross-border E-commerce Cross-border e-commerce can be defined in both broad and narrow sense. In a narrow sense, cross-border e-commerce is almost equal...
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