对于催化反应,加入催化剂与不加催化剂相比,反应速度()。
A、增大
B、不变
C、减小
D、不确定
参考答案:D
A client returns from a myelogram, for which an iodized oil (Pantopaque) was used. Which one of the following nursing measures would be included in his care
A. Bed rest with bathroom privileges.B. Restricted fluid intake.C. Head of the bed elevated 45 degrees.D. Assessment of lower extremity movement and sensation.
注塑制品进行退火处理时,退火温度一般控制在塑料的()。
A、使用温度以上10-20℃,热变形温度以下10-20℃
B、与A相反
C、使用环境温度以下即可
D、热变形温度以上即可