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【多选题】
以下哪些观念属于旧的市场观念?A.
生产观念
B.
产品观念
C.
推销观念
D.
市场营销观念
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】If you look at the sentence more closely, you’ll find there is a ______.
A.
play words
B.
words play
C.
play on words
D.
play in words
【简答题】如果一种商品价格上升10%,另一种商品需求量增加了15%,这两种商品的需求交叉弹性是多少?这两种商品是什么关系?
【简答题】如果一种商品价格上升10%,另一种商品需求量增加了15%,这两种商品的需求交叉弹性是多少?这两种商品是什么关系?
【单选题】you would have to go away.
A.
One more word and
B.
Say another word
C.
With more words and
D.
Say more words
【单选题】The fuel injection pumps on a diesel engine are controlled by a linkage system attached to the _____.
A.
camshaft
B.
crankshaft
C.
governor
D.
flywheel
【单选题】If the diesel engine fuel injection timing is changed to delay the start of injection until the pistons are at top dead center, the engine will_________.
A.
backfire through the air intakes
B.
develop less power under load
C.
have high firing pressures
D.
lift its cylinder relief valves
【简答题】如果一种商品价格上升10%,另一种商品需求量增加了15%,这两种商品的需求交叉弹性是多少?这两种商品是什么关系?
【简答题】数据管理技术的发展依次经历了人工处理阶段、文件系统阶段、____阶段、分布式数据库系统阶段等。
【单选题】Significant retardation of a diesel engine fuel injection timing will result in ________.
A.
smoother engine operation
B.
advanced fuel ignition
C.
increased fuel economy
D.
reduced engine power
【单选题】Turbulence is created in the cylinders of a diesel engine to ________.
A.
obtain injection lag
B.
help mix fuel and air
C.
increase combustion pressure
D.
utilize higher injection pressures
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