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【简答题】
知识产权的特点是什么？
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皮皮学刷刷变学霸
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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】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.
【单选题】如图所示为某晶体管时间继电器的接线图,设有ON和UP两个指示灯,那么关于两个指示灯的状态描述正确的是( )。
A.
2-7通电后,ON灯与UP灯同时亮;2-7断电后,ON灯先熄灭,延时后UP灯熄灭
B.
2-7通电后,UP灯先亮,延时后ON灯才亮;2-7断电后,ON灯与UP灯同时熄灭
C.
2-7通电后,ON灯先亮,延时后UP灯才亮;2-7断电后,ON灯与UP灯同时熄灭
D.
2-7通电后,ON灯与UP灯同时亮;2-7断电后,UP灯先熄灭,延时后ON灯熄灭
【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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