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【多选题】
在网络设计中,防火墙系统的设计可包括:( )A.
非军事区
B.
核心交换机
C.
外部过滤路由器
D.
内部过滤路由器
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举一反三
【单选题】Feeding the fish ______ is bad for them. [ ]
A.
much too food
B.
too much food
C.
much too foods
D.
too much foods
【单选题】电路图如下所示，开关动作前电路处于稳态，已知：【图片】t=0时刻，开关S闭合，试求电路的时间常数=（ ）ms。【图片】
A.
0.06
B.
0.6
C.
6
D.
60
【单选题】That afternoon Molly almost danced along the street, as she walked home with her father from the station. They had seen Mrs. Gibson and Cynthia off to London. She wished her step - mother would take h...
A.
She was looking forward to Mrs. Gibson's return.
B.
She was delighted to be alone with her father.
C.
She hated being apart from Cynthia.
D.
She wished she had gone to London too.
【单选题】They arrived home very wet, as they had walked all the way______ the rain.
A.
in
B.
under
C.
into
D.
with
【简答题】什么叫锐线光源?在原子吸收光谱分析中为什么要采用锐线光源?
【简答题】下图所示电路中的开关已经打开了很长时间，在t=0时闭合，求t>0时电路的时间常数t =（）ms。（精确到整数）【图片】
【判断题】They walked to the back of the church and stood at the door as their guests went past. From c olleagues and old schoolmates came cheerful expressions of good will clothed in friendly jokes. Some relat...
A.
正确
B.
错误
【简答题】As they walked home slowly, Martin walked in front with another peasant talking about the sowing, and Mary walked behind, with her eyes on the ____________, thinking.
【简答题】Tom and Dick are next door neighbor who work 小题1:___________ in the same office so they walked together to and from 小题2:___________ office. Some day as they were walking home together it...
【单选题】听力原文： That afternoon Molly almost danced along the street, as she walked home with her father from the station. They had seen Mrs. Gibson and Cynthia off to London. She wished her stepmother would tak...
A.
She wished she had gone to London too.
B.
She was delighted to be alone with her father,
C.
She was looking forward to Mrs. Gibson's return.
D.
She hated being apart from Cynthia.
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