第4(单选) 两个相同专业的施工企业组成联合体进行投标,甲为施工总承包特级资质,乙为施工总承包一级资质,则该联合体应按( )资质确定等级
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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