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【简答题】
用十六进制运算方法计算首部检验和: 设 IP 数据报使用固定首部,其各字段的具体数值如图所示(除 IP 地址外,均为十进制表示)。试用十六进制运算方法计算应当写入到首部检验和字段中的数值(用二进制表示)。 4 5 0 28 1 0 0 4 17 10.12.14.5 12.6.7.9
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举一反三
【简答题】II. Fill in the blank in each sentence with a word or phrase taken from the box in its appropriate form.
【简答题】Fill in the blank in each sentence with a word or phrase taken from the box.
【简答题】Make the correct choice to fill in the blank in each sentence.
【单选题】Fill in the blank in each sentence with a word or phrase taken from the given words in appropriate form.
A.
hool trips give children _______experience not available in the classroom.
B.
cope with
C.
life-changing
D.
invest
E.
embracing
F.
benefit from
G.
first-hand
H.
reflect
I.
encounter
J.
acquisition K. routine
【简答题】Fill in the blank in each sentence in Group 1 with a word taken from Group 2.
【单选题】Fill in the blank in each sentence with a word or phrase taken from the given words in appropriate form.
A.
cond language _______ is the most important part in language learning.
B.
cope with
C.
life-changing
D.
invest
E.
embracing
F.
benefit from
G.
first-hand
H.
reflect
I.
encounter
J.
acquisition K. routine
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