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【简答题】
某企业获得一B类网络地址192.24.0.0/16,欲构建60个子网,每个子网内的主机数目为500台。试问,采用可变长子网掩码255.255.252.0是否可行?并判断190.24.193.0属于哪一子网段?
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反馈参考答案：
举一反三
【单选题】What’s your friend like?
A.
She is American
B.
She is a teacher
C.
she likes English
D.
She is tall and beautiful
【简答题】How many science________(lesson) do you have in a week?
【单选题】比赛阵形的演变顺序是（）。
A.
“WM”、“四前锋”、“四二四”、“整体式”
B.
“四前锋、“WM”、“整体式”、“四二四”
C.
“四二四”、“四前锋”、“整体式”、“WM”
D.
“四前锋”、“四二四”、“WM”、“整体式”
【单选题】比赛阵形的演变顺序是( )。
A.
“WM”、 “四前锋”“四二四”“整体式”
B.
“四前锋、 “WM”、 “整体式”“四二四”
C.
“四二四”“四前锋”“整体式”“WM”
D.
“四前锋”“四二四”“整体式”“WM”
【单选题】听力原文：M: How many science courses did you have in high school? W: I had only one year of biology and chemistry. I wish I'd had more. I'm interested in physics, to be frank. Q: How many science courses ...
A.
One course.
B.
Two courses.
C.
Three courses.
D.
More than three courses.
【单选题】In the United States,how many of the newly hired professors in science and engineering are foreign-born?
A.
10%
B.
20%
C.
30%
D.
38%
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