皮皮学，免费搜题
登录
搜题
【单选题】
某企业最近几批产品的优质品率分别为86%、93%、91%,为了对下一批产品的优质品率进行抽样检验,确定必要的抽样数目时,P()A.
86%
B.
90%
C.
93%
D.
91%
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】完形填空。 Jose had just seen his friend, Mike. Several hours ago his friend was 1 by a speeding truck and hurt badly. He wept (流泪) silently as he thought about his 2 friend. Nothing else seemed to 3 now. ...
【简答题】非特异性感染常见的致病菌有 、 、 和 。