老年人应用易产生定向性障碍和不规则扭动的药物是
A．庆大霉素
B．普萘洛尔
C．利多卡因
D．安定
E．左旋多巴
参考答案：E
He for ten years.
A．has been married
B．married
C．got married
D．has married
选煤工艺设计需要拥有哪些原始煤质资料？
