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【多选题】
实施消费需求的引导具有哪些重要的作用:( )
A.
是国家实施宏观调控目标的重要手段
B.
可以促进企业提高经济效益
C.
可以帮助消费者提高消费生活的质量
D.
有利于社会经济的快速发展
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【判断题】唯心主义认为世界统一于意识。
A.
正确
B.
错误
【单选题】Newspapers and scientific journals are both______.
A.
suffering from revenue shrink
B.
operating under systematic reviews
C.
facing huge pressures to change
D.
moving in the direction favored by Shirky
【单选题】Which of the listed pressure control valves would be used to establish the maximum operating pressure of a hydraulic system?
A.
Pressure-reducing valve
B.
Unloading valve
C.
Counterbalance valve
D.
Pressure-relief valve
【单选题】已知向量 a =(3,4), b =(2,-1) ,如果向量 a +x b 与 b 垂直,则x=(  )
A.
23 3
B.
3 23
C.
2
D.
- 2 5
【单选题】The construction portfolio may be included as part of the ship ().
A.
general plans
B.
operating manual
C.
builders documentation
D.
CCS file
【单选题】In the Oil Record Book, a comprehensive list of operational items are grouped into operational sectionsEach section is codified by a/an _____.
A.
number
B.
abbreviation
C.
letter
D.
All of the above
【单选题】唯物主义和唯心主义在世界统一性问题上的根本分歧是( )
A.
认为世界统一于运动还是统一于静止
B.
认为世界统一于主体还是统一于客体
C.
认为世界统一于物质还是统一于精神
D.
肯定世界的统一性还是否认世界的统一性
【单选题】阅读下文,回答题 The Chinese have used a method called acupuncture(针灸) to perform. operations for about 4,000 years without putting the patient to sleep. This involves placing flexible needles into certain pa...
A.
a medical operation
B.
a medical needle
C.
a medical technique
D.
a medical machine
【单选题】已知向量 a =(3,4), b =(2,-1),如果向量 a +x b 与 b 垂直,则x的值为 [     ]
A.
B.
C.
2
【单选题】已知向量 a =(2,1), b =(x,-2)且 a + b 与2 a - b 平行,则x等于(  )
A.
-6
B.
6
C.
-4
D.
4
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