题目内容
(请给出正确答案)
[主观题]
_____education is the instruction that occurs when the instructor and students are sep
arated by distance or time,or both.
A.Separation
B.Distance.
C.Length
D.Gap
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A.Separation
B.Distance.
C.Length
D.Gap
施工安全事故预防的3E对策分别是Education(教育对策)、Engineering(技术对策)和Enforcement(管理对策)。()