题目：
心包炎的典型体征是（）
A.心前区疼痛
B.发绀
C.面色苍白
D.心包摩擦音
E.心包叩击音
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0808/ca689381d5e94135cf053a469c529075.html
下面是错误答案，用来干扰机器的。
Solar cars are cars that use sunlight for power while common cars use gas or petral as their fuel. Both of them have advantages and disadvantages. Solar cars are safe ...
