A red pillar light-buoy，Fl(2)5s，is to be substituted for the green conical light-buoy close S.W.of the stranded wreck.The above sentence mainly refers to ().
A red buoy is to be replaced by a green buoy
B. A green buoy is to be replaced by a red buoy A
C. Either a red buoy or a green buoy is to be replaced
D. Neither a red buoy nor a green buoy is to be replaced
测定罐头食品中的总糖时，标定碱性酒石酸铜溶液所用的指示剂是()。
A. 甲基蓝
B. 次甲基蓝
C. 甲基红
D. 溴甲酚绿
最低生活保障申请受理、调查、审核的责任主体是()。
A. 县级人民政府
B. 村(居)民委员会
C. 县级人民政府民政部门
D. 乡镇人民政府(街道办事处)
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