He ____that day as long as possible: In Modern Times in 1936, the first film in which he was heard as a singing waiter, he made up a nonsense language which sounded like no known nationality.
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皮皮学刷刷变学霸
举一反三
【单选题】下列各组混合溶液中,不具有缓冲作用的是
A.
100 mL 0.10 mol/L KH2PO4 溶液和 50 mL 0.10 mol/L NaOH 溶液
B.
100 mL 0.10 mol/L HAc 溶液和 50 mL 0.10 mol/L NaOH 溶液
C.
100 mL 0.10 mol/L NaH2PO4 溶液和 50 mL 0.20 mol/L NaOH 溶液
D.
100 mL 0.10 mol/L KH2PO4 溶液和 50 mL 0.10 mol/L HCl 溶液