超前小导管注浆,当裂隙宽度(或粒径)小于____mm,或渗透系数k≥10-4m/s时,注浆材料宜优先选用水玻璃类和木胺类浆液。( 2000分)
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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