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【多选题】
新产品的类型有哪些?A.
全新产品
B.
换代产品
C.
改进产品
D.
仿制产品
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【简答题】People who live in different places may belong to______
【简答题】has a limit in the age for those who will live on campus?__________
【单选题】Who will take part in the Council's new plan?
A.
The children who live at Milton and go to Impington school.
B.
The children who live at Impington and go to Milton school.
C.
The children who live at Milton and go to Milton school.
D.
The children who live at Impington and go to Impington school.
【单选题】What kind of child is vulnerable to cancer?
A.
Those who live near a factory.
B.
Those who live near a bus station.
C.
Those who live in Birmingham.
D.
Those who live in the UK.
【单选题】The crosshead and crankpin bearings are secured to the______by means of fitted bolts.
A.
crosshead guides
B.
crosshead shoes
C.
piston rod
D.
connecting rod
【简答题】A．Men who live in windy areas. B．Women who volunteered to stay outside. C．Travelers who take showers. D．People who are under stress.
【多选题】下列关于分析土地报酬三阶段的分布规律和主要特征正确的是( )
A.
在第一阶段，总产量曲线增长速率呈先增加后减缓趋势。
B.
第二阶段是边际报酬和平均报酬同时递减的阶段，在此阶段的报酬递减对于生产的发展是有利的，因此可以持续增加可变资源的投放量。
C.
第三阶段边际产出小于0，总产出随投入增长开始下降，生产弹性为负，是非理性的阶段
D.
资源利用和要素配置的最适度点位于第二阶段
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