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计算： 12 -(2011 ) 0 +( 1 2 ) -1 -|- 3 | ．
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【简答题】平行投影法,根据投射线相对于投影面的方向,可分为( )和( )。
【简答题】阅读理解。 Some things can carry messages, for example, a sign at the bus stop helps you to know which bus to take. Signs on the door tell you where to go in or out. Have you ever noticed that there are a ...
【简答题】Some things can carry(携带) messages, for example, a sign（标志） at the bus stop helps you to know which bus to take. Signs on the door tell you where to go in or out. Have you ever noticed that there are ...
【单选题】Which of the following is an example of abbreviation?
A.
Motel.
B.
Bus.
C.
Edit.
D.
WTO.
【简答题】The bus in a computer is an example
of which form of communication?A. serial B. parallel C. neithor A nor B
【简答题】Signs carry messages. For example, a sign at the bus stop helps you to know 小题1: (哪一个) bus to take. A sign on the wall of your school helps you find the 小题2: (图书馆). Signs through doors tell you where ...
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