粘质土在做含水率试验时,下列烘干时间()合适。 A.6h B.7h C.8h D.9 发布时间:2017-09-16 01:53 │ 来源:www.tikuol.com 题型:多项选择题 问题: 粘质土在做含水率试验时,下列烘干时间()合适。A.6hB.7hC.8hD.9h
题型:多项选择题 At sea,all required GMDSS equipment(other than survival craft equipment)must be proven operational by().A.daily testingB.either A or CC.operational use of the equipmentD.testing at least every 48 hours 查看答案