63.【判断题】一位教授计算了20名学生的样本平均考试成绩,并用它来估计1500名参加考试的学生的平均考试成绩,这是推断统计学的一个例子。
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bad weather blank-filling-1Request 1to avoid the reported 2 .请求向左偏离航道10英里以避让报告的下沉气流
bad weather blank-filling-2We had to descend immediately due to 1 at our 2 . We didn’t have time to request descent as the frequency was busy.由于当前巡航高度出现风切变,我们不得不快速下降,由于刚才频率繁忙,我们没有时间申请下降
bad weather blank-filling-3We won’t have to 1 if you allow us to 2如果允许我们爬升到高度层430,我们就不用偏离航道了
bad weather blank-filling-4There was 1 when we descended through 3000 feet. Our 2 by 25 knots.当我们下降穿过3000英尺时有逆温层出现,空速突然减少了25节