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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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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】强心苷进行强烈酸水解时,苷元结构中的羟基较难发生脱水反应的是( )
A.
C 11 -OH
B.
C 14 -OH
C.
C 5 -βOH
D.
C 4 位有双键的C 3 -OH
【单选题】I'm sorry I can't do that. It is the company's _______.
A.
exchange
B.
return
C.
employee
D.
refund
E.
service
F.
policy
G.
items
【简答题】I'm sorry I can't do that. It is the company's .
【单选题】—Would you mind if I use your dictionary? —Of course not. . [ ]
A.
Don't do that.
B.
I'm sorry I can't.
C.
It's over there.
D.
I have a dictionary. d
【单选题】I'm sorry I can't stop with you. I have much work to do.
A.
to talk
B.
talking
C.
talk
D.
talked
【单选题】听力原文：M: Would you like some more potatoes? W: I'm sorry I can't manage more. Thank you. Q: What does the man ask the woman to do? (16)
A.
To buy some potatoes.
B.
To pass him some potatoes.
C.
To have some potatoes.
D.
To help him cook some potatoes.
【简答题】胶体系统的动力学特性有: 、 、 。
【简答题】I'm sorry I can't do that. It is the company's p_______ (政策).
【单选题】After reading the article, one would refrain from concluding that _________.
A.
optimism reigns in regard to getting Ph. D. dropouts to return to their pursuit of the degree
B.
a Ph. D. dropout, by and large, does not have what it takes to learn the degree
C.
colleges and universities employ a substantial number of Ph. D. dropouts
D.
Ph.D.'s are not earning what they deserve in nonacademic positions
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