结合所示图像,右肾、骨盆和膀胱的充盈缺损是()
A.血凝块
B.肿瘤
C.感染
D.对比剂(延时扫描)
E.结石
参考答案:A
—___________, can you tell me the way to the People’s Hospital?
—Oh, turn left at the second crossing and you will find it on your left.
A.By the way
B.In some ways
C.In this way
D.On the way
我国羊泰勒虫病的传播媒介是()。
A.吸血蝇类
B.微小牛蜱
C.蚯蚓与蚱蜢
D.青海血蜱
E.吸血昆虫