少冲穴是心经的井穴，小指屈向掌心横纹，小指指尖下凹陷处即是。
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手少阴心经经脉可治疗心．胸．神志病以及经脉循行部位其他病症。
A. 对
B. 错
Airport works as a _____ center for the landing and takeoff of aircraft.
A. transportation
B. command
C. transmission
D. transformation
Airports provide transportation both for people and _____.
A. fright
B. flight
C. freight.
D. fight
An aircraft is _____ of several areas and structures that provide services for aircraft and passengers.
A. framed
B. composed
C. made
D. formed
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