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单项选择题

环形拓扑结构的优点有（）

A.路由选择控制简单
B．电缆长度短
C．适用于光纤
D．环形拓扑所需电缆长度比星型拓扑结构要长
E．环形拓扑所需电缆长度比总线型拓扑结构要短
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单项选择题
Acts of infringing upon rights of another person include: 1.______(组织) or 2.______(胁迫) or 3. ______(诱骗) those under 16 or the disabled to give terrifying or inhumane performances; forcing another person to work by means of 4. ______ (暴力) or 5. ______ (威胁)or other means; illegally 6. ______(限制) another person’s freedom of the person; illegally making a body search of another person; writing letters of 7. ______(恐吓) or threatening another’s personal safety by other means; openly 8______( 侮辱) another person or 9. ______(诽谤) another person by 10. ______(捏造) stories.
A.______(组织)
B.______(胁迫)
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