急性溶血的早期症状是（）
A.血红蛋白尿
B.腰背及四肢酸痛、头痛、呕吐、寒战、高热等
C.休克
D.昏迷
E.肾衰竭
参考答案：B
子弹的基本结构制式子弹由弹头、弹壳、底火和（）组成。
A.火药
B.弹药
C.发射药
D.烟火药
An analyst does research about market efficiency. Which of the following statements does not support the weak form efficient market hypothesis Investors can earn abnormal profits by :（）
A. using fundamental analysis to purchase the securities.
B. using no public information to purchase the securities.
C. using technical analysis strategies to purchase the securities.
