第 18: 18AgCl在纯水中溶解度比010 mol·L-1 NaCl溶液中 (AgCl: Ksp = 177×10-10 ) ( )
You can _____ some bottles of wine, or some chocolates, or a bunch of flowers.
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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