41 A failure to observe__________ restrictions and maintain situational awareness is among six factors that contributed to the fatal crash of a helicopter.
(A)altitude
(B)attitude
(C)latitude
(D)longitude

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統計: A(107), B(50), C(22), D(18), E(0) #1200187

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#2210586
(A)altitude 高度;海拔(B)...
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