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【单选题】
当一台计算机从FTP服务器下载文件时，在该FTP服务器上对数据进行封装的五个转换步骤是( )。A.
比特，数据帧，数据包，数据段，数据
B.
数据，数据段，数据包，数据帧，比特
C.
数据包，数据段，数据，比特，数据帧
D.
数据段，数据包，数据帧，比特，数据
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反馈参考答案：
举一反三
【简答题】Ditlow suggests the code information of the electronic keys readily accessible under the supervision of ______.
【简答题】下面哪种方法沉淀出来的蛋白质具有生物学活性?A. 重金属盐 B.盐析 C.苦味酸 B. 常温下有机溶剂 E.强酸强碱
【单选题】The phrase 'come to grips with' in the last paragraph most probably means ______.
A.
to understand completely
B.
to deal seriously with
C.
to attack violently
D.
to firmly get hold of
【单选题】The designer himself is not sure whether this software is appropriate ______ children under 12 years ol
A.
with
B.
in
C.
for
D.
of
【单选题】The teacher told her Senior 3 students that it was important to ___________ time for relaxation under great pressure.
A.
set up
B.
set about
C.
set down
D.
set aside
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