Mrs. Wilson, a primigravida, was admitted to the hospital at 12 weeks’ gestation. She is complaining of abdominal cramping, exhibits bright red vaginal spotting without cervical dilation. The nurse determines that the client is most likely experiencing which of the following types of abortion

A. Complete.
B. Threatened.
C. Inevitable.
D. Misse

国内目前最常用的塑料聚合法为（）

A.水浴热聚法

B.微波聚合法

C.自凝成型

D.光固化聚合

E.气压聚合