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【单选题】
听力原文:M: Parcel Express, good morning, how can I help you? W: Good morning. I'm thinking of sending a parcel to New York next week. Can you tell me what the procedure is, please? M: Certainly. When you ring us, we need the following information. The invoice address, that's possible your address, isn't? and then the pick-up address, if that's different. And your contact phone number. W: Just a moment. I'm taking notes. Phone number, right. M: Then we need the full name, address and phone number of the person you're sending the parcel to. W: OK. Anything else? M: Yes. The weight and dimension of the parcel, that's height, width and length, and the value of the goods and a full description. W: Value, description. M: Yes, but don't seal the parcel. You need to leave it open so that the driver can check the contents when he collects it. After the recent bombing, the airline said we have to check all the parcels. They told us we have to do it. W: Fine, now last question, how long will the parcel take to get to New York? M: One to two working days. There are daily flights at midday, and if we collect the parcel from you at 10: 15, then your parcel catches that flight and arrives within 24 hours. W: Right. Thank you very much. You've been very helpful. M: Not at all. Goodbye. W: Goodbye. (20)
A.
The weight and size of the parcel.
B.
The value of the goods.
C.
The parcel receipt.
D.
The telephone number.
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【单选题】 如图所示双轴对称工字形截面钢梁,在弯矩Mx和剪力V共同作用下,关于截面中应力 的说法正确的是( )
A.
剪应力最大的点是 2 点
B.
折算应力最大的点是 1 点
C.
折算应力最大的点是 3 点
D.
正应力最大的点是 1 点
【单选题】任何程序必须加载到()中才能被CPU执行
A.
内存
B.
硬盘
C.
控制器
D.
磁盘
【单选题】任何程序必须加载到()中才能被CPU执行
A.
磁盘
B.
硬盘
C.
内存
D.
外存
【单选题】主机甲与主机乙之间建立TCP连接,主机甲向乙发送了一个序号为100的报文段,包含200字节的有效载荷,主机乙正确接收到这个报文段后,发送给主机甲的确认号为( )
A.
300
B.
200
C.
201
D.
301
【单选题】主机甲与主机乙之间建立 TCP 连接,主机甲向乙发送了一个序号为 100 的报文段,包含 200 字节的有效载荷,主机乙正确接收到这个报文段后,发送给主机甲的确认号为 ( )
A.
201
B.
300
C.
301
D.
200
【单选题】主机甲与主机乙之间建立TCP连接,主机甲向乙发送了一个序号为100的报文段,包含200字节的有效载荷,主机乙正确接收到这个报文段后,发送给主机甲的确认号为( )
A.
301
B.
300
C.
201
D.
200
【简答题】已知,关于的 方程 ( 为整数)的根为整数,双曲线 >0 过梯形 的顶点 和腰 中点 ,如图所示,且∠ ,求四边形 的面积。
【单选题】主机甲与主机乙之间建立一个TCP连接,主机甲向主机乙发送了3个连续的TCP段,分别包含300B, 400B和500B的有效载荷,第3个段的序号为900。若主机乙仅正确接收到第1和第3个段,则主机乙发送给主机甲的确认序号是( )。
A.
1400
B.
300
C.
500
D.
1200
【简答题】直线l 1 :y=k 1 x+b与双曲线l 2 :y= k 2 x 在同一平面直角坐标系中的图象如图所示,则关于x的不等式 k 2 x >k 1 x+b的解集为______.
【单选题】任何程序必须加载到( )中才能被CPU执行。
A.
外存
B.
硬盘
C.
磁盘
D.
内存
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