未分类题

What has William asked Nicole to do?
A.Contact a client
B.Attend a meeting
C.Take him to the airport
D.Meet him at the train station

A.Contact
B.Attend
C.Take
D.Meet

【参考答案】

D
解析：说话者打电话的第二个目的是“do you think you or someone could pic......

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听力原文：Can I have your attention, please? Passengers waiting for flight GE sixty-four, there's been a gate changE.Let me repeat that: Flight GE sixty-four, flying to Charlotte and then on to Miami, is NOT departing from Gate F-twenty-seven. Flight GE sixty-four will depart from Gate B-ninE.The departure time has been pushed back from four o'clock to four-fifteen. A shuttle to concourse B will be arriving shortly. We're sorry for the inconvenience, but the plane that is currently here at Gate F-twenty-seven is experiencing mechanical troubles and will not be going anywhere for a whilE.So we'll be taking off from Gate B-nine insteaD.Thank you for your patiencE.What is the purpose of this announcement?A.To announce the arrival of a flightB.To notify passengers of a gate changeC.To advise travelers about a new security procedureD.To let passengers know where their baggage will arrive

A.What
B.To
C.To
D.To
E.To

单项选择题

人机系统组成串联系统，若人的操作可靠度为0.80，机器设备可靠度为0.90，人机系统可靠度为（）。

A.0.72
B.0.8
C.0.9
D.0.98

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