壮腰健肾，用于腰膝酸软，头晕耳鸣，眼花心悸，阳痿遗精
A．玉屏风颗粒B．锁阳固精丸C．壮腰健肾丸D．活血苏口服液E．壮腰健身丸
参考答案：E
______are! I've never seen so many beautiful flowers. [ ]
A. What beautiful the flowers
B. How beautiful the flowers
C. What beautiful flowers
D. How beautiful flowers
法兰密封垫的作用是（）。
A、增强法兰强度
B、防止法兰生锈
C、密封法兰缝隙
D、消除法兰电荷
