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【简答题】
用彩笔描出下面各圆的直径、半径．
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【单选题】The banking system developed fast in the late 19th century mainly due to ________.
A.
overseas competition
B.
matured home market
C.
an imbalance in trade
D.
growth in financial demand
【简答题】Due to the fact that light travels______(fast)than sound, lightning is seen before thunder is heard．
【判断题】Fast fading is due to scattering of the signal by object near transmitter
A.
正确
B.
错误
【单选题】对 UML 的叙述不正确的是( )
A.
UML 统一了 Booch 方法、 OMT 方法、 OOSE 方法的表示方法
B.
UML 是一种定义良好、易于表达、功能强大且普遍适用的建模语言
C.
UML 融入了软件工程领域的新思想、新方法和新技术
D.
UML 仅限于支持面向对象的分析与设计阶段，不支持其它的软件开发阶段。
【单选题】Shanghai' s car rental industry is growing so fast mainly due to ________.
A.
better cars supplied by producers
B.
fast service offered by car rental firms
C.
the increasing number of white-collar employees
D.
people's growing interest in traveling during holidays
【单选题】What point does Ricky Bland make about the fast-food industry?
A.
Its attitude to staff development is often misunderstood.
B.
It has difficulty recruiting suitable staff.
C.
It invests more in technology than in staff.
【单选题】下列有关空气污染的叙述,正确的是( ) 。
A.
PM2.5是直径在2.5微米以下的可吸入颗粒物
B.
空气质量级别越高，空气质量越好
C.
臭氧层能吸收外太空射线，臭氧不是污染物
D.
二氧化碳不是有害气体，没有计入空气污染指数的项目
【简答题】A．due to B．due in C．due D．due of
【判断题】The rapidfluctuations in the spatial and temporal characteristics caused by local multipath areknown as fast fading (short-term fading due to fast spatial variations). Distances ofabout half a wavelen...
A.
正确
B.
错误
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