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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

705.A taxi driver who begins operating without completing the occupational (practice) registration andobtaining the registration certificate as required shall: (A) Have his/her driver's license suspended. (B)Have his/her driver's license revoked. (C) Be fined.

706.Which of the following best describes the correct driving behavior to prevent hydroplaning? (A)Hydroplaning is mainly related to the depth of standing water on the road; as long as the water does notexceed the height of the tire tread, it is safe to drive at normal speed. (B) Before passing through aflooded section on a rainy day, slow down in advance, because the higher the speed, the less effectivethe tire's drainage ability, and the risk of hydroplaning increases significantly with speed; also ensuresufficient tread depth to maintain drainage function. (C) Modern vehicles are generally equipped with ABSanti-lock braking systems, which can effectively prevent hydroplaning; drivers only need to drive normallyand apply full braking force when necessary, and the system will handle it automatically.

707.When driving at night on a rural road with no lighting, and there are no oncoming vehicles or vehiclesahead, which type of lights should be used? (A) Turn on the fog lights. (B) Use the high beams asappropriate to increase visibility. (C) Use the low beams to avoid draining the battery.