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【单选题】
( )是供应商对实行买断商品,不再退货的采购商给予的价格优惠。
A.
现金折扣
B.
数量折扣
C.
不退货折扣
D.
交易折扣
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【单选题】异丙肾上腺素化学性质不稳定,极易氧化,是由于结构中有()
A.
烯胺结构
B.
叔胺结构
C.
烯醇式羟基
D.
亚砜基
E.
邻二酚羟基
【单选题】It can be concluded that English Linguistic Imperialism is ______.
A.
the English elitism that English is becoming an accepted form. and superior to other languages
B.
the Great Britain' s invasion of other countries in the world
C.
the colonialism held by English speaking people
D.
referring to English linguists who are very hegemonic and offensive
【单选题】Fiedler concluded that task-oriented leaders performed best when the situation was ________.
A.
highly favorable
B.
highly unfavorable
C.
either highly favorable or highly unfavorable
D.
moderately favorable or moderately unfavorable
【单选题】Fiedler's LPC ratings concluded that leaders were either ________.
A.
positive or negative
B.
task oriented or trusting
C.
relationship oriented or people oriented
D.
task oriented or relationship oriented
【单选题】Fiedler concluded that relationship-oriented leaders performed best when the situation was ________.
A.
highly favorable
B.
highly unfavorable
C.
either highly favorable or highly unfavorable
D.
moderately favorable or moderately unfavorable
【单选题】异丙肾上腺素化学性质不稳定,极易氧化,是由于结构中有
A.
β-羟基
B.
叔胺结构
C.
乙胺侧链
D.
苯环
E.
邻二酚羟基
【判断题】Fiedler concluded that relationship-oriented leaders seemed to perform better in highly unfavorable situations.
A.
正确
B.
错误
【单选题】异丙肾上腺素化学性质不稳定,极易氧化,是由于结构中有
A.
可消旋化的β-羟基
B.
异丙胺基
C.
乙胺侧链
D.
α-甲基
E.
邻苯二酚
【单选题】关于铜和铝的说法错误的是( )
A.
铜的导电性能优于铝
B.
铝的焊接工艺比铜的好
C.
铜的机械强度优于铝
【单选题】下列关于合金的说法错误的是
A.
镁铝合金的熔点比镁和铝都髙
B.
镁铝合金的硬度比镁和铝都大
C.
合金比纯金属用途更广泛
D.
青铜、硬铝、钢都是合金
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