请问关于活塞的作用下列说法不正确的是()。
A.压缩气缸内的空气
B.二冲程柴油机中启闭气口
C.组成燃烧室
D.二冲程柴油机中排出气缸内废气
参考答案:D
Emergency restraints or seclusion may be implemented without a physician’s order under which of the following conditions
A. When a written order will be obtained from the primary physician within 1 hour.B. If a voluntary client wants to leave against medical advice.C. When a minor child is out of control.D. Never.
简述气胀覆盖成型和特点。