vaccine question 2 ?
2. Which of the following characteristics describes an all-or-nothing vaccine?
A. Take = 80%, degree = 50%
B. Take = 100%, degree = 99%
C. Take = 80%, degree = 100%
D. Take = 100%, degree = 70%
本題當年無人回答
這則提問從 2021 年發出後,直到知識+ 在 2021 年 5 月關站, 都沒有等到任何一則回答。它就這樣留在這裡。