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【简答题】
国际标准化组织（ISO）提出的开放系统互连(OSI)计算机网络参考模型是什么？
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皮皮学刷刷变学霸
举一反三
【简答题】Teaching students of threshold level is hard work but the effort is very ________. A) precious B) rewarding C) worth D) challenging
【单选题】The students in China often get to school _____ bike, but the students in Japan usually _____ the train to school.
A.
on ; get
B.
by ; take
C.
in ; with
D.
ride; in
【单选题】下列属于全等节拍流水和成倍节拍流水共有的特点是( )。
A.
所有施工过程在各个施工段上的流水节拍均相等
B.
相邻施工过程的流水步距相等
C.
专业工作队数等于施工过程数
D.
流水步距等于流水节拍
【简答题】According to the passage, why are students of the same achievement level grouped together?
【单选题】This special school accepts all disabled students, __ educational level and background.
A.
according to
B.
regardless of
C.
in addition to
D.
in terms of
【简答题】对普通蜗杆传动，主要应当计算主平面内的（）。
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