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【单选题】
During the graduation _______ the president gave a wonderful speech.
A.
evaluation
B.
sign
C.
individual
D.
ceremony
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举一反三
【单选题】What is use of Network Layer?
A.
To establish connection
B.
To start a network
C.
Network layer performs routing.
D.
Do Nothing
E.
Sorry I dont know.
【简答题】Je ne trouve pas ma clé de voiture. Elle est .
【多选题】将电能与负载连接起来的元件一般有()。
A.
电源
B.
导线
C.
开关
D.
负载
【单选题】What layer of the TMN (telecommunications management network) model does CTM fit into?()
A.
Network management layer
B.
Element management layer
C.
Business management layer
D.
Network element layer
【简答题】请对病例做出完整诊断 诊断 龋齿
【单选题】According to paragraph 3, what is unusual about the suns corona?
A.
It is the outmost layer of the sun's atmosphere and is correspondingly cooler.
B.
It is hotter than the photosphere despite being farther away from the core.
C.
It is 200 times as deep as the photosphere and is most visible to the naked eye.
D.
It is the layer of the sun's atmosphere where energy escapes as sunlight.
【单选题】What is the purpose of the network layer of the OSI seven layer model?
A.
It selects a route for the message, forming segments into packets and adding the header information.
B.
It encodes the packets into the medium that will carry them - such as an og signal, if the message is going across a telephone line - and sends the packets along that medium.
C.
It translates the message into a language that the receiving computer can understand.
D.
it is the only part of the process a user sees.
【单选题】在导游服务过程中,我们面对客人有中国人也有外国人,有老人也有孩子,他们在旅游过程中,有各种各样的要求,甚至有个别客人素质非常低下,这些都要求我们导游要从容面对.合理处理,这体现了我们导游服务( )的特点。
A.
独立性强
B.
脑体高度结合
C.
客观要求复杂多变
D.
跨文化性
【单选题】(单项选择题)在导游服务过程中,我们面对客人有中国人也有外国人,有老人也有孩子,他们在旅游过程中,有各种各样的要求,甚至有个别客人素质非常低下,这些都要求我们导游要从容面对、合理处理,这体现了我们导游服务()的特点。
A.
独立性强
B.
脑体高度结合
C.
客观要求复杂多变
D.
跨文化性
【单选题】实际电源有内阻,可用有伴理想电源建立其电路模型,下述说法正确的是( )。
A.
有些只能等效为有伴电压源,有些只能等效为有伴电流源
B.
有伴电压源在一定条件下可以等效为有伴电流源
C.
既可以等效为有伴电压源,也可以等效为有伴电流源
D.
上述都不正确
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