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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

766.Regarding a driver's use of 'driving assistance display devices' while operating a vehicle on the road,which of the following statements is correct? (A) As long as it is factory-installed equipment, the drivermay operate the driving assistance display device freely while the vehicle is in motion. (B) Settings for thedriving assistance display device should be completed before departure; operating the device while thevehicle is in motion is prohibited. (C) The driving assistance display device may be continuously watchedor operated while the vehicle is in motion as a substitute for paying attention to road conditions.

767.Regarding the description of the difference between white arrow 'directional guide lines' painted on theroad surface before an intersection and 'lane-use arrow markings' painted within a lane, which of thefollowing is correct? (A) 'Directional guide lines' are mandatory; vehicles must travel in the direction of thearrow and may not change to another lane. (B) 'Directional guide lines' serve to pre-announce thedirection to be taken at the upcoming intersection, guiding drivers to move into the appropriate lane inadvance; 'lane-use arrow markings' strictly restrict that lane to vehicles traveling in the arrow directiononly. (C) Both serve the same function; they differ only in arrow size and placement location.No. Ans Question

768.Regarding the regulations on seatbelt usage by passengers inside a large bus traveling on a highway orexpressway, which of the following is correct? (A) Only the driver and front-seat passengers are requiredto wear seatbelts. (B) The driver and all passengers aged 4 and above must wear seatbelts. (C) Only thedriver is required to wear a seatbelt; passengers may choose at their own discretion.