Lập kế hoạch & Dự toánCâu 417 / 521
The NEC is updated on a three-year cycle. The 2023 NEC directly follows which prior edition?
a.2017 NEC
b.2020 NEC
c.2014 NEC
d.There is no prior edition
Giải thích
On the three-year cycle, the edition immediately before the 2023 NEC is the 2020 NEC. The 2017 and 2014 editions are earlier cycles, not the one directly preceding 2023.
Luyện miễn phí toàn bộ 521 câu hỏi — không cần đăng ký.
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