Lesson 8 背景知识选择-4What are the possible reasons for holding?
A. flow control
B. traffic congestion
C. flight delays at the airport
D. waiting for weather improvement
E. performing the checklist to do the troubleshooting
F. wide-use of GNSS
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Lesson 8 背景知识选择-5Which of the following does not belong to precision approach?
A. VOR
B. NDB
C. ILS
D. Localizer Approach
E. GPS
F. MLS
Lesson 8 背景知识选择-6What are the possible reasons for the crew to dump fuel?
A. They have to return to land shortly after takeoff due to emergency situations on board
B. They have to land at another airport before reaching the destination airport due to medical emergency on board
C. The maximum landing weight of an aircrfaft has been exceeded
D. The maximum landing weight is higher than the maximum takeoff weight.
马克恩主义是时代的产物,它的产生有其深刻的社会根源、阶级基础和思想渊源。马克思主义产生的社会根源(或经济、社会历史条件)是
A. 马克思、恩格斯的革命实践
B. 无产阶级在反对资产阶级的斗争中逐步走向自觉
C. 资本主义经济的发展
D. 人类文明成果的最新发展
1848年2月《共产党宣言》的发表标志着马克思主义的公开问世。马克思主义的创立有一个过程,为创立马克思主义奠定思想前提的是
A. 马克恩、恩格斯完成了从唯心主义向共产主义、从革命民主主义向共产主义的转变
B. 马克思、恩格斯对人类文明成果的继承与创新
C. 马克思、恩格斯接受“正义者同盟”的邀请,将其改组为“共产主义者同盟”
D. 唯物史观和剩余价值学说的创立
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