氯化羟基呋喃酮(MX)污染主要来源于（）
A.汽车废气
B.饮水氯化消毒
C.装饰和建筑材料
D.垃圾焚烧
E.污染的化妆品
参考答案：B
企业收回已转销的坏账，不会引起应收账款账面价值发生变化。 ( )
After determining that a pregnant client is Rh-negative, the physician orders an indirect Coombs’test. What’s the purpose of performing this test on a pregnant client
A. To determine the fetal blood Rh factor.B. To determine the maternal blood Rh factor.C. To detect maternal antibodies against fetal Rh-positive factor.D. To detect maternal antibodies against fetal Rh-negative factor.
