第5题:[单选题]An airplane stalls when _______ , regardless of weight or airspeed. A.the critical angle of attack is exceeded B.the angle of attack is below the critical angle C.the angle of incidence is changed D.the angle of attack changes with the increase of airspeed 参考答案:A
第31题: [单项选择]下列变更管理流程的排序,正确的是:() A. 识别变更,批准变更,评估变更,执行和记录变更,关闭变更 B. 识别变更,评估变更,批准变更,执行和记录变更,关闭变更 C. 批准变更,识别变更,评估变更,执行和记录变更,关闭变更 D. 批准变更,评估变更,识别变更,执行和记录变更,关闭变更 参考答案:B