下列聚合物玻璃化转变温度最低的是()
A. 聚异戊二烯
B. 聚乙烯
C. 聚二甲基硅氧烷
用硬PVC制成的雨衣长时间悬挂后会变形,这种现象可以描述为()
A. 蠕变
B. 应力松弛
C. 滞后
When communicating with a deaf-mute patient, we can:
A. Communicate with him or her with a kind and friendly attitude
B. Can ask questions and communicate with the patient in writing
Can enhance the effectiveness of communication by using simple and clear hand gestures
D. All of the above
When communicating with a blind patient, we should:
A. Sit quietly beside the patient
B. Tell the points for attention to the patient in a normal way before the patient receives physical examination
C. Tell the points for attention to the patient in a loud voice before the patient receives physical examination
D. Tell the points for attention to the patient in a mild tone before the patient receives physical examination
微信支付 
支付宝支付