- 搜標(biāo)題
- 搜題干
- 搜選項
單項選擇題
The on-board video ______ that the deadly plunge into the river was caused by a fight between the bus driver and a passenger.
A、revealed
B、illustrated
C、recognized
D、defrauded
B、illustrated
C、recognized
D、defrauded
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問答題
PH測定中鄰苯二甲酸氫鉀是用來配置堿性標(biāo)準(zhǔn)溶液（）
此題為判斷題(對，錯)。
答案：
錯。在pH測定中，鄰苯二甲酸氫鉀（KHC8H4O4）通常用來配置酸性標(biāo)準(zhǔn)緩沖溶液，而不是堿性標(biāo)準(zhǔn)溶液。它在水中溶解后形成...
