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76 距 γ 點射源外某處之曝露率為 12 個單位,若要降至 5 個單位,假設增建因數為 1.0,則需在兩者之 間置入約多少個半值層屏蔽? (A) 2.69 (B) 1.93 (C) 1.54 (D) 1.26

71.「游離輻射防護安全標準」規定,除搶救生命外之緊急曝露人員,劑量儘可能不超過多少? (A)50毫西弗 (B) 100毫西弗 (C)250毫西弗 (D)500毫西弗

71.依據游離輻射防護安全標準,有關緊急曝露人員之劑量規定,下列何者正確? (A)為搶救生命,劑量限値為單一年劑量限度的5倍 (B)為防止嚴重危害,劑量限値為單一年劑量限度之20倍 (C)緊急曝露所接受之劑量,應與職業曝露之劑量合併記錄 (D)為減少大量集體有效劑量,劑量限値為單一劑量限度之2倍

648.If a small vehicle suddenly cuts in front of a large vehicle and brakes sharply, how should this behaviorbe classified? (A) It is a legal driving behavior in an emergency situation and does not constitute aviolation. (B) It is a traffic violation and is likely to cause a traffic accident. (C) Small vehicles have theright of way and only need to be mindful of the following distance.No. Ans Question

649.Which of the following correctly describes the meaning of a "blind spot" on a large vehicle? (A) The areathat the driver can fully see through the rear-view mirrors. (B) The area that the driver cannot observeeither directly or indirectly. (C) Only the area behind the vehicle that cannot be seen.

650.Regarding the blind spots of large vehicles, which of the following is an incorrect concept? (A) Blind spotsmay exist on the sides of the vehicle. (B) As long as you can see the driver, you can be sure the drivercan see you. (C) The extent of blind spots may vary depending on the type of vehicle.No. Ans Question