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【多选题】
下面哪些属于包装的一般技法( )。A.
对内装物的合理置放、固定和加固
B.
包装外的捆扎
C.
缓冲包装技法
D.
外包装形状尺寸的合理选择
E.
防锈包装技法
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反馈参考答案：
举一反三
【简答题】用IUPAC及普通命名法（如果可能的话）命名或写出结构式。
【简答题】用下词语填空: whenever whoever whatever However We decide to finish the work on time, ____ happens.
【简答题】用 IUPAC 及普通命名法 ( 如果可能的话 ) 命名或写出结构式
【简答题】用下词语填空: whenever whoever whatever However He would have a look at the bookstores ____ he went to town.
【简答题】用下词语填空: whenever whoever whatever However I ’ ll give the book to ____ likes English. whoever
【单选题】有甲乙两个患者,甲左心室舒张末期容积为140ml,收缩末期容积为56 ml;乙患者左室舒张末期容积为160ml,收缩末期容积为64 ml,两患者的射血分数:
A.
甲高于乙
B.
乙高于甲
C.
相同
D.
均高于正常
E.
均低于正常
【单选题】The star performer of comic dialogue is full of humor, who is able to ______an occasion whenever _____ go wrong with his humorous performances [ ]
A.
light up; things
B.
brighten up; things
C.
amuse; the things
D.
entertain; things
【简答题】用IUPAC及普通命名法(如果可能的话)命名或写出结构式: a. (CH 3 ) 2 CHCHO b. c. d. (CH3)2CHCOCH3 e.(CH3)2CHCOCH(CH3)2 f. g. (CH3)2C=CHCHO h. CH2=CHCHO i. CH3COCH2CH2COCH2CH3 j. CH3CH2...
【简答题】用下词语填空: whenever whoever whatever However If we work with a strong will, we overcome any difficulty, ____ great it is. However
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