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【判断题】
启用GRE的keepalive功能后,GRE隧道的本端会周期性地每10s发送一次keepalive报文。A.
正确
B.
错误
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【简答题】Hello! My name’s David. I’m 15. I’m a student of No.6 Middle School. I have three friends at school. They are Tom, Bill and Jim. They are all 15 years old. We are friendly(友好的) to each other(互相). Ther...
【单选题】Speaker A: Hello, may I speak to Alan Bright? Speaker B: ______
A.
Hello, may I ask who you are?
B.
Hello, please wait for a moment and I'll go to call him.
C.
Speaking.
D.
Hello, I'm Alan Bright.
【简答题】为什么说现代教育技术是教育改革与发展的制高点与突破口?
【单选题】KISS原则是：
A.
Keep it strict and simple
B.
Keep it short and simple
C.
keep it short and smoothly
D.
keep it strict and smoothly
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