浮顶贮罐组装焊接后船舱顶板的局部变形,用直线样板测量,不得大于()mm。
参考答案:10
Some experts are warning that the step the US government has taken to deal with the current crisis is ______ of much risk.
A.ones
B.one
C.that
D.those
在干燥的蛋白质中,灭活全部的人类免疫缺陷病毒,至少需要
A.40℃72小时B.56℃30分钟C.68℃72小时D.68℃30分钟E.56℃72小时