【名词&注释】
首长负责制(head responsibility system)、当事人(party)、违法行为(illegal activities)、集体负责制(collective responsibility)、有关规定(related regulations)、统一指挥(unity of command)、主管机关(competent authorities)、行政处罚决定书(written decision of administrativepenal ...)、采取补救措施、一把手负责制
[单选题]当事人不在场的,应当在()日内将水行政处罚决定书(written decision of administrativepenal)按照民事诉讼法的有关规定送达当事人。
A. 3
B. 5
C. 7
D. 10