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52. 啟斷容量為 500MVA 之 12kV 斷路器,能通過之最大故障電流約為多少 kA?(A)15(B)100(C)50(D)24。
問題詳情
52. 啟斷容量為 500MVA 之 12kV 斷路器,能通過之最大故障電流約為多少 kA?
(A)15
(B)100
(C)50
(D)24。
參考答案
答案:D
難度:
適中
0.52
書單:
沒有書單,新增
上一篇 :
51. 一個 5Ω 之電阻器,若通過電流由 10A 升高至 50A,則功率變為原本多少倍?(A)10(B)250(C)100(D)25。
下一篇 :
53. 精密儀表所使用之電阻器必須用_____的材料製造。(A)溫度係數大(B)電阻係數小(C)電阻係數大(D)溫度係數小
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55. 利用垃圾焚化廠處理垃圾的最主要優點為何?(A)減少空氣污染(B)去除垃圾中所有毒物(C)減少處理垃圾的程序(D)減少處理後的垃圾體積。
56. 低壓接戶線之接戶支持物離地高度不得小於多少公尺?(A)2.0(B)1.5(C)1.8(D)2.5。
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第 11 至 15 題為題組 In certain forests, when you look up you will see a network of cracks formed by g
【題組】12. (A) universal (B) productive (C) conventional (D) multiple
【題組】13. (A) get over (B) compete for (C) give way to (D) make up for
【題組】14. (A) reliance on (B) exposure to (C) sensitivity to (D) reflection on
【題組】15. (A) For (B) Besides (C) Despite (D) Concerning
第 16 至 20 題為題組 Gravity has been at the top of the science agenda since the start of Mars missi
【題組】17. (A) physical (B) perceptual (C) mental (D) external
【題組】18. (A) redistribute (B) redistributed (C) redistributing (D) being redistributed
【題組】19. (A) contagious (B) unusual (C) severe (D) aggressive
【題組】20. (A) varied with (B) brought about (C) transferred from (D) accompanied by
第 21 至 30 題為題組 Water makes up more than half of our body weight. To sustain this amount of flui
【題組】22(AB) absorption (AC) active (AD) alert (AE) combat (BC) option(BD) effective (BE) even (CD) st
【題組】23(AB) absorption (AC) active (AD) alert (AE) combat (BC) option(BD) effective (BE) even (CD) st