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【单选题】
( ) 用于为 飞机在爬升和下降阶段提供气压高度基准,这样才能通过航图确定和下面地形之间的垂直间距,以确保安全。 ( ) 用于为 飞机在航路飞行阶段阶段提供统一气压高度基准,避免因高度基准不同而导致垂直间隔不够而出现事故 。A.
标准海平面气压、修正海平面气压
B.
修正海平面气压、标准海平面气压
C.
场面气压、标准海平面气压
D.
海平面气压、海平面气压
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反馈参考答案：
举一反三
【单选题】What is the author trying to do with the example in paragraph 3?
A.
Prove the idea that positive motivations are really needed for students.
B.
Criticize the students about their lack of persistence faced with difficulties.
C.
Show his pity on students' weak will power.
D.
Reflect about our educational system and the role exams play in it.
【单选题】When we do business with various kinds of people, we should
A.
maintain an advantageous position all the time.
B.
expand our market share as much as possible.
C.
change our methods and use suitable approach to deal with different people.
【多选题】现实生活中,常有一些企业的经济行为发生,下列经济行为中,适用企业价值评估的方式有( )。
A.
企业用部分资产对外投资
B.
企业整体转让
C.
企业产权转让
D.
被其他企业兼并
E.
企业停业整顿
【单选题】It can be inferred that we should ______ from the passage.
A.
enforce the principle of 'positive reinforcement'
B.
continue advocating rewarding system in America
C.
put more emphasis on use of punishment
D.
try to limit the use of rewards and incentives
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