Mei Li:
Scorpion W2 (USA), Woodland Pattern (USA), Flecktarn (Germany), and Multi-Terrain Pattern (UK) are notable designs of what??
Shuai Zheng:
camouflage
Mei Li:
In which Chicago theater did over 500 people die in a fire in 1903??
Shuai Zheng:
iroquois theater
Mei Li:
Which acid used to be made by the lead chamber process but is now usually made by the contact process??
Shuai Zheng:
sulphuric