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複選題42. 對碳化矽磨料之敘述何者正確? (A)有黑色及綠色兩種 (B)有紅色及綠色兩種 (C)黑色碳化矽適用於抗拉強度較低之鑄鐵 (D)紅色碳化矽純度較高,硬度較高適用於磨削超硬合金、碳化物等 。

複選題43. 砂輪選用原則,下列何者正確? (A)工件表面要求光度高時,應選用硬砂輪 (B)砂輪轉速高用軟砂輪 (C)磨削軟材料用硬砂輪,磨削硬材料用軟砂輪(D)工件移動速度快用軟砂輪 。

複選題44. 下列何種砂輪檢查項目有問題時,必須更換砂輪? (A)外觀檢查 (B)音響檢查 (C)疲勞檢查 (D)平衡檢查 。

43. What is the main idea of this passage? (A) The need to keep strict traditions to preserve order. (B) The importance of magic spells for problem-solving. (C) The value of equality and unity for all members of society. (D) The inevitability of conflict between princes and princesses.

44. According to the passage, what does the phrase “long sleep of old beliefs” suggest? (A) Outdated customs led people into passivity. (B) The kingdom’s people were physically asleep. (C) The witch was controlling everyone’s dreams. (D) Aurelia was the only person who needed to rest.

45. According to the passage, what was the result of Radiantine’s transformation? (A) The dragon became king of Radiantine. (B) Princes were replaced by a council of knights. (C) Every individual’s voice and ability were celebrated. (D) Princesses remained in towers but gained new clothing.