表示危险化学品的急性毒性的LD50的单位是()
A.mg/kg
B.g/kg
C.mL/kg
D.ug/kg
参考答案:A
85.We all thought ______ a question ________we could raise enough money for the project.
A.that; that
B.it; whether
C.it; that
D.that; whether
皮肤弥漫充血、上有密集针尖大小丘疹()
A.麻疹
B.水痘
C.猩红热
D.风疹
E.幼儿急疹