试题详情
- 单项选择题 Refer to the exhibit. Which ephone-dn type does Phone 10 represent?（）
A、shared ephone-dn
B、overlaid ephone-dn
C、oual-line ephone-dn
D、single-line ephone-dn
E、dual-number ephone-dn
F、two ephone-dns with one number
- B
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