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• 一、船舶上一部 380 V，60 Hz，4 極的三相感應電動機，設轉差率為 0.03，轉子銅損為 120 W，機械損及雜散損合計為 200 W，試求此電動機轉子之電流頻率、輸出功率及輸出轉矩為多少？（
• 1 於某無日射空間中所測定的黑球溫度，下列敘述何者錯誤？(A)周壁輻射溫度高於空氣溫度且有風時，黑球溫度會比空氣溫度來得低 (B)周壁輻射溫度低於空氣溫度且無風時，黑球溫度會比空氣溫度來得低 (C)周
• 若正△ABC邊長為100，則其內切圓面積：外接圓面積＝？(A) 1:1 (B) 1:2 (C) 1:4 (D) 1:8 。
• 在△ABC中， ， ，若I、G兩點分別為△ABC的內心與重心，則 ＝？(A) 2 (B) 3 (C) 4 (D) 5 。
• △ABC為直角三角形，∠BAC＝90°， ，D為 中點，若G1為△ABD的重心，若G2為△ACD的重心，則 長為何？(A) (B) 5 (C) (D) 。
• 如圖(八)，圓O分別與△ABC的三邊相切於D、E、F三點，若 ，則 ＝？  (A) 18 (B) 27 (C) 36 (D) 45 。
• 如圖(七)，△ABC為直角三角形，∠B＝90°， ，O為△ABC的內切圓圓心，則 ＝？ (A) 3 (B) (C) (D) 3√2。
• 如圖(六)，梯形ABCD中， 為梯形兩腰中點的連線段， ，則 ＝？  (A) 8 (B) 14 (C) 6 (D) 12 。
• 如圖(五)，△ABC中，若 為∠BAC的角平分線，且 ，則 ＝？  (A) 10 (B) 12 (C) 14 (D) 16 。
• 下列敘述何者錯誤？(A) 正多邊形的外心、內心、重心在同一點 (B) 正五邊形的對稱軸共有 5 條(C) 長方形一定有外接圓 (D) 直角三角形的重心在斜邊中點上 。

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