皮皮学，免费搜题
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搜题
【单选题】
英文单词HuB、Switch、Bridge、Router、Gateway代表着网络中常用的设备,它们分别表示为( )。A.
集线器、交换机、网桥、路由器、网关
B.
交换机、集线器、网桥、网关、路由器
C.
集线器、交换机、网桥、网关、路由器
D.
交换机、网桥、集线器、路由器、网关
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举一反三
【判断题】Usually Christmas trees are artificial and people can buy them in the supermarkets.
A.
正确
B.
错误
【单选题】在PowerPoint2010中，在浏览视图下，按住CTRL并拖动某幻灯片， 可以完成_______操作。
A.
复制幻灯片
B.
删除幻灯片
C.
移动幻灯片
D.
选定幻灯片
【单选题】Christmas trees are often considered as a horticultural crop because _____________ .
A.
they are beautiful
B.
they are cultivated on Christmas Day
C.
they assume sufficient value to justify large expenditures for fertilization, pruning, harvesting, and marketing
D.
they are grown for timber or pulp
【简答题】听录音，选择你所听到的句子。 ( ) 1. A. Christmas trees are always green. B. I like all green trees. ( ) 2. A. My mother bought me a sweater yesterday. B. My father brought me a melon yesterday. ( ) 3. A...
【单选题】These two Christmas trees are of ___size,but the one they bought yesterday is maybe twice ___size of them.
A.
the, the
B.
a, the
C.
a, a
D.
the, a
【单选题】在PowerPoint 2003中，在浏览视图下，按住Ctrl键并拖动某幻灯片，可以完成的操作是 ()。
A.
选定幻灯片
B.
复制幻灯片
C.
移动幻灯片
D.
删除幻灯片
【单选题】On December 10 the price of a Christmas tree is $50 and 100 trees are purchased. On December 20 the demand for Christmas trees decreases so that the price falls to $30 and 20 trees are purchased. From...
A.
demand for Christmas trees is price inelastic.
B.
demand for Christmas trees is price elastic.
C.
supply of Christmas trees is inelastic.
D.
supply of Christmas trees is elastic.
相关题目：
【判断题】Usually Christmas trees are artificial and people can buy them in the supermarkets.
A.
正确
B.
错误