题目内容
三阴交穴是______与______，______经脉相交会的穴。
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Normally the term _____ refers to incidents in which the pilot forgets to extend the landing gear, while ____ refers to incidents where a mechanical malfunction prevents the pilot from extending the landing gear.
A voice message system on some aircraft may give a clear _____ warning indication: “GEAR NOT DOWN”.
When the pilot forgets to extend the landing gear, he needs to conduct a _____ landing.
The most common cause of gear-up landing is the pilot imply forgetting ______ the landing gear before touch down.
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