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【单选题】
当河流流出,摆脱了侧向约束,其携带的物质便铺散沉积下来,在出山口处形成扇形堆积体——冲积扇。冲积扇在平面上呈扇形,可分为扇顶、扇中、扇缘三部分,扇顶伸向谷口,在立体上大致呈半埋藏的锥形。下面“干旱地区冲积扇平面示意图”,下图为“湿润地区冲积扇平面示意图”。据此完成4~5题。 4.干旱地区冲积扇形态较湿润地区冲积扇形态显著的原因是A.
干旱地区冲积扇面积大
B.
干旱地区河流落差小
C.
湿润地区地形起伏大
D.
湿润地区流水作用强
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【单选题】A customer has received a quotation from Dell for Intel-based 1U servers. What is the first step in submitting your quotation？ （）
A.
Try to sell IBM X-Architecture technology to the customer and explain its benefits.
B.
Take the customer to the Dell Web site for determining a similar server configuration.
C.
Submit a special bid to receive additional discount on 1U servers.
D.
Design a comparable solution while highlighting IBM advantages.
【简答题】Complete each sentence with a word from the box. A. lasting B. made C. quality D. selling E. tech F. wearing 1. Rolex makes high-_________ watches. 2. Timberland makes fashi...
【单选题】关于电磁现象,下列说法中正确的是( )
A.
地磁场的北极在地理的北极附近
B.
电动机工作时把机械能转化为电能
C.
电磁铁的磁性强弱与电流大小和线面匝数的多少有关
D.
只要导体在磁场中做切割磁感线运动，就会产生感应电流
【单选题】By __________ discount alerts on Twitter, Dell has generated more than $1m in sales.
A.
emitting
B.
activating
C.
broadcasting
【简答题】Dell has a ____1____ with its customers. They don’t use ____2____ to sell their goods. They offer ____3____ to customers to help customers make a ____4____ . Customers can buy a system ____5____.
【单选题】在电磁感应现象中,下列说法正确的是( )。
A.
只要穿过闭合回路的磁通量有变化,就一定有感生电流
B.
感生电流的磁场跟原磁场方向相反
C.
感生电动势的大小跟穿过闭合回路的磁通量成正比
D.
一段导体作切割磁力线运动,就一定会产生感生电流
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