试题与答案

下面的信号不是旅客广播系统提供的是() A.旅客广播 B.选择呼叫谐音 C.预录通知

题型:单项选择题

题目:

下面的信号不是旅客广播系统提供的是()

A.旅客广播

B.选择呼叫谐音

C.预录通知

D.登机音乐

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B解析: 设弟弟当时的年龄为x,则哥哥当时的年龄为2x,年龄差为x。则弟弟今年年龄为2x,哥哥今年年龄为3x,列方程2x+3x=35,解得x=7岁,因此哥哥今年3×7=21岁。

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He said, "Of course, she did. "
"Well, I just did!" With that, the little girl started skipping towards their car happily.

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A.难以置信的
B.令人兴奋的
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