中国大学MOOC: 固体火灾有多种，请问“浸润水（Wetting water）”适用于哪一种？

What is the main function for glycerin in calamine lotion A: Suspending agent B: Flocculant C: Anti-flocculant D: Wetting agent

When carrying out vacuum filtration which of the following isNOT necessary A: Clamping the Buchner flask B: Breaking the seal before turning off the vacuum C: Folding the filter pape D: Wetting the filter paper before you start