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【单选题】
( 5 )下列关于同系物的叙述中,正确的是( )。A.
通式相同的不同物质一定属于同系物
B.
同系物的物理性质不同，化学性质相似
C.
同系物的物理性质相似，化学性质不同
D.
同系物的物理性质相似，化学性质也相似
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反馈参考答案：
举一反三
【单选题】某小零件本应用T12钢制造,但错用了45钢,淬火沿用了T12钢的工艺,则淬火后的组织为( )
A.
马氏体
B.
马氏体+碳化物+残余奥氏体
C.
铁素体+马氏体
D.
铁素体+珠光体
【简答题】How much are you worth to agiven company if you continue to purchase its brand for the rest of your life?Many marketers are grappling with that question, but it’s not easy to determinehow much a custo...
【单选题】Stream Company ’ s standard rate for factory workers is set at $5 per hour. The standard time allowed to produce one unit of product is 20 minutes. During the period, 4,800 units were produced and the...
A.
$390 A
B.
$190 A
C.
$190 F
D.
$390 F
【简答题】How much are you worth to agiven company if you continue to purchase its brand for the rest of your life?Many marketers are grappling with that question, but it’s not easy to determinehow much a custo...
【单选题】Stream Company ’ s standard rate for factory workers is set at $5 per hour. The standard time allowed to produce one unit of product is 20 minutes. During the period, 4,800 units were produced and the...
A.
$210 A
B.
$210 F
C.
$200 A
D.
$200 F
【多选题】下列关于子程序的说法正确的是（）。
A.
子程序可以提供模块化的程序设计
B.
使用子程序可以节省存储空间
C.
使用子程序可以降低运行速度
D.
使用子程序可以提高运行速度
【单选题】Stream Company ’ s standard rate for factory workers is set at $5 per hour. The standard time allowed to produce one unit of product is 20 minutes. During the period, 4,800 units were produced and the...
A.
$390 A
B.
$190 A
C.
$190 F
D.
$390 F
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