4. 一個電容器型游離腔的有效體積為 2 cm³，電容為 5 pF，輻射照射之前的電壓為 180 V， 照射後下降為 140 V，空氣的密度為 0.001293 g/cm³，請計算曝露(C/kg)為多少？

5. 簡述 β 粒子對人體健康效應之重要影響及其屏蔽考量。

(1)距離射源 1 m 處的空氣克馬率(air Kerma rate)為 3× Gy/h，若使用 4.4 cm 厚的屏 蔽，屏蔽的線性衰減係數為，增建因數(buildup factor)為 2.12，請計算空氣克 馬率(Gy/h)。

(2)請問該輻射的平均自由路徑(mean free path)為何？

(1) 完全停留於空氣中，產生的正負離子對大約是幾對？

(2) 完全停留於鍺中，產生的電子電洞對大約是幾對？

(3) 因此，高純度鍺偵檢器和游離腔偵檢器何者的能量解析度較好？

六、非選擇題：20%。 （一）摘要寫作(10 分) 請在 120 字以內寫出以下短文之摘要。如超過 120 字，本題將以 0 分計算。        TAIPEI, Taiwan — Taiwanese officials urged people to consider the implications before changing their name to “Salmon,” after dozens flooded government offices to register a name change so they could qualify for a restaurant promotion.        The frenzy took hold this week after Japanese chain Sushiro promised a free sushi meal to customers whose names included the traditional Chinese characters “guiyu,” meaning salmon. Customers with names that sounded similar to “salmon” could enjoy a half-price feed.         Many found the offer irresistible, and so ensued what local media branded “Salmon Chaos.”        Dory Wang, a Sushiro marketing manager, said about 200 customers with the name “Salmon” on their identity card had visited one of the chain’s restaurants on Wednesday, adding that the response of seafood-loving Taiwanese had exceeded expectations. “We appreciated those who are willing to change their names for our sushi,” Wang said.         For some, the craze has proved more of a hassle.         “Five people requested a name change today and another six yesterday,” said Ou Minxin, an official at a local household registration office in Kaohsiung, Taiwan’s second-largest city. “We have seen changed names such as ‘Hotness Salmon,’ ‘Dip Wasabi and Eat Salmon,’ and ‘Can’t Help but Want to Eat Free Salmon.’ ”        Ou said most of them changed their names back after having a meal. “It has indeed added to our workload, but it is quite interesting,” he said.       But there’s a catch — and some diners may have bitten off more than they can chew.       Taiwan’s Ministry of the Interior posted a reminder on Facebook that a person can only change their name three times in a lifetime, explaining that two of those will be wasted if a person changed their name to “Salmon” and back.       “This kind of name change not only wastes time but causes unnecessary paperwork,” Deputy Interior Minister Chen Tsung-yen told reporters as he urged the public to “cherish administrative resources.”        One resident decided to add 36 characters to his name, including seafood-themed characters such as “crab” and “lobster,” local media reported.        A 19-year-old student surnamed Hong said on Facebook that he changed his name to “Hong Salmon” and invited users to join him for a meal, offering eight time slots. He has not yet considered changing his salmon-themed name, saying it represents his courage to do whatever he wants.

（二）教案設計（10 分） 請依據上述新聞報導之短文，撰寫一堂跨領域的教案。請以英文寫出該教案之教學目標 及其教學活動。

II. Vocabulary in Context.  1. ________: fill in lexical words from the list below to make the passage meaningful. Please note the grammatical forms for nouns and verbs. One word can only be used once.

1.

115年 - 115-1 行政院原子能委員會_輻射防護員：游離輻射防護專業#139730

114年 - 114-2 行政院原子能委員會_輻射防護員：游離輻射防護專業#132416

114年 - 114-1 行政院原子能委員會_輻射防護員：游離輻射防護專業#127000

113年 - 113-2 行政院原子能委員會_輻射防護員：游離輻射防護專業#124991

113年 - 113-1 行政院原子能委員會_輻射防護員：游離輻射防護專業#122512

112年 - 112-2 行政院原子能委員會_輻射防護員：游離輻射防護專業#118678

112年 - 112-1 行政院原子能委員會_輻射防護員：游離輻射防護專業#114274

111年 - 111-2 行政院原子能委員會_輻射防護員：游離輻射防護專業#111458

111年 - 111-1 行政院原子能委員會_輻射防護員：游離輻射防護專業#109181

110年 - 110-2 行政院原子能委員會_輻射防護員：游離輻射防護專業#103853