阿摩線上測驗 登入

最新科目

最新試卷

最新試題

最新申論題

最新課程

最新主題筆記

最新討論

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

17. 將碳酸水溶液加入下列何種水溶液中,會產生沉澱物? (A) 氫氧化鈣 (B) 氯化鈉 (C) 氯化銨 (D) 碳酸鉀

715.The sign in the figure is?(A) Roundabout direction of travel. (B) Divided road. (C) Two-way road.

716.Regarding the definition and location of the 'deceleration lane' on freeways or expressways, which of thefollowing is correct? (A) A lane set between the main carriageway and a ramp, for vehicles to acceleratebefore merging onto the main carriageway. (B) A lane set between the main carriageway and a ramp, forvehicles to decelerate before leaving the main carriageway and entering the ramp. (C) A lane set at theexit of the main carriageway, for vehicles to merge onto the main carriageway.