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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

628.While driving on a freeway and encountering a vehicle slowing down ahead, how should you respond?(A) Apply emergency brakes immediately. (B) Maintain a safe following distance and gradually reducespeed. (C) Change lanes and overtake quickly.

629.When intending to change lanes from the outer lane to the middle lane on a multi-lane road, whichregulation should the driver follow? (A) First activate the turn signal or use a hand gesture in the directionof the intended lane change. (B) You may change lanes directly if the distance is sufficient. (C) Sound thehorn as a warning and then change lanes.

630.Regarding overtaking and yielding by motor vehicle drivers, which of the following is incorrect? (A)Overtaking is prohibited on curves, steep slopes, narrow bridges, tunnels, and road constructionsections. (B) When overtaking the vehicle ahead, continuously honk the horn and flash the lights to forcethe vehicle ahead to yield. (C) Drivers should yield to driving school vehicles, vehicles exclusively foryoung children, specially-made vehicles for persons with disabilities, and school buses.