可用于诊断原发性非典型性肺炎的血清学试验是()
A.肥达试验
B.外-斐试验
C.冷凝集试验
D.冷球蛋白测定
E.嗜异性凝集试验
参考答案:C
This girl was very lucky because she won _____ in the lottery. [ ]
A. million of dollars
B. a million dollars
C. five millions dollars
D. one million of dollars
房室结折返性心动过速通常是通过()。
A.以上都不对
B.快路径下传,再由快路径逆传
C.快径路下传,慢径路逆传
D.慢路径下传,再由慢路径逆传
E.慢径路下传,快径路逆传