题目内容
下列（）是木屋架的计量单位。
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词汇与结构In flight, loss of control is the biggest single _________ of transport aircraft fatal accidents.
词汇与结构Loss of control in flight has been one of the most _________ causes of fatal aircraft accidents for many years.
词汇与结构Loss of control usually occurs because the aircraft enters a flight regime which is outside its normal ________, thereby introducing an element of surprise for the flight crew involved.
词汇与结构More attention to recovery from _________ attitudes for larger aircraft operating without a visual horizon reference is needed.
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