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【題組】(二) ppb
問題詳情
【題組】(二) ppb
參考答案
答案:B
難度:
計算中
-1
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上一篇 :
二、芬普尼(Fipronil, FM 437.15)是一種廣效殺蟲劑,用於農業、居家及寵物用藥,進行液相層析質譜儀分析市售雞蛋樣品中芬普尼之殘留,請問欲配製 43.7 μg 芬普尼溶於 250 毫升(
下一篇 :
【題組】(三)轉換為微莫耳濃度(micromolarity, μM)
資訊推薦
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22 ________ that Grandma was hospitalized, I would have visited her last night with my brothers.(A)
23 The hotel’s good night gift, a chocolate ________in gold paper, was placed on the pillow.(A) heap
24 After the flood, people were sad about their loss but ________about getting back to normal life s
25 With the little money I got from my part-time job, I certainly cannot________ to buy the luxury c
請依下文回答第 26 題至第 30 題: To survive, animals need to find food. Some predators have developed special