Such training would widen the student controllers general aviation knowledge , enhance their alertness , anticipation and decision making in handling difficult or emergency situations . mr lam will return to hong kong tomorrow ( august 25 ) 这些训练可以增广见习航空交通管制主任的一般航空知识，以及使他们在处理因难或紧急情况时有更高警觉性，对事态发展有更好掌握和作出明智决定。
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