HDG DISCREPANCY(航向差异)当主飞行显示器及导航显示器显示检查航向时,表示机 长和副驾驶显示的航向差至少大于__ ?( )
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
免费的网站请分享给朋友吧