class A
class B
class C
class D
第1题：
A petroleum liquid has a flash point of 85°F. This is a grade ______.
A.B flammable liquid
B.C flammable liquid
C.D combustible liquid
D.E combustible liquid
第2题：
Camphor oil is classified as a ______．
A.Grade A flammable liquid
B.Grade C flammable liquid
C.Grade D combustible liquid
D.Grade E combustible liquid
第3题：
sodium chloride equivalent
第4题：
MAGFLO®系列电磁流量计信号转换器有（）
第5题：
A portable foam (stored-pressure type) fire extinguisher would be most useful in combating a fire in ______.
A.generators
B.oil drums
C.the bridge controls
D.combustible metals
第6题：
What is the best instrument for establishing a safe working area before welding in a confined space?
A.An oxygen indicator
B.A combustible gas indicator
C.A combination combustible gas and oxygen indicator
D.A flame safety lamp
第7题：
A foam-type portable fire extinguisher is most useful in fighting a fire in ______.
A.generators
B.oil drums
C.the bridge controls
D.combustible metals
第8题：
Phenytoin Sodium的化学名为（ ）。
第9题：
第10题：
MAGFLO®系列电磁流量计传感器有（）型号