最易合并亚急性细菌性心内膜炎的心脏病是
A.冠状动脉硬化性心脏病
B.高血压性心脏病
C.风湿性心脏瓣膜病
D.扩张性心肌病
E.慢性肺源性心脏病
参考答案:C
改错。
( ) 1. Canada is north of U. S. ________________
A B C
( ) 2. Australia flag is blue. ________________
( ) 3. The U. K. have a king or a queen. ________________
( ) 4. This is the white house. ________________
( ) 5. The president of the U. S. live in it. ________________
( ) 6. Let's have some funs. ________________
调配塑料时,所用的粉和液的比例,按重量为()
A.0.5~1:1
B.1~1.5:1
C.1.5~2:2
D.2~2.5:2
E.2~2.5:1