Ques : Which scientist invented the material that made the N95 mask possible?
A. Peter Tsai
B. David Baltimore
C. Karlheinz Brandenburg
D. Neil Papworth
Ans : A. Peter Tsai
Ques : Which scientist invented the material that made the N95 mask possible?
A. Peter Tsai
B. David Baltimore
C. Karlheinz Brandenburg
D. Neil Papworth
Ans : A. Peter Tsai