题目内容
RS-232接口最常用的DB9针脚定义是:2为发送,3为接收,5为地,又称“”信号。
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Lesson two fill in the blanks （只填数字或字母，没有空格） 1. PIL: ______ Control ______ stand ______ request departure informationCTL: ______ departure runway ______, surface wind ______degrees ______kts, QNH ______temperature _____dewpoint _______
Lesson Two--listen and fill in the blanks with missing callsigns, numbers and letters-2 PIL: ______ Control _______ _______ miles northeast of ______ heading _______ _______CTL: _______ descend to _______ and contact Approach _______
Lesson Two--listen and fill in the blanks with missing callsigns, numbers and letters-3 PIL: ______Departure Boeing ______ heavy, ______ climbingCTL: Boeing ____ continue climb to ______ and contact________
Lesson Two--listen and fill in the blanks with missing callsigns, numbers and letters-4 PIL: ______ Control ______ ______ _______ _______ , estimating boundary _____CTL: _____ maintain _____ contact ______ Control on_______
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