简述氨压机停车步骤。
参考答案:
1、将能量调节手柄逐级打至零档,待气缸完全卸载,关闭入口阀;
2、按停车按扭;
3、将出口阀关闭;
4、切断冷却水;
5、打开氨压机放空阀泄压。
Don't waste your words any more; she is as _____ as a mule (骡子) and no one can persuade her.[ ]
A. reliable
B. stubborn
C. determined
D. tired
女婴,4个月,1周来口腔粘膜出现白色凝乳状的斑点及斑块,可擦掉;患儿啼哭,哺乳困难。应怀疑为()
A.鹅口疮
B.复发性口腔溃疡
C.疱疹性龈口炎
D.球菌性口炎
E.克隆病