金属切削设备的定期检查,要对刀架、丝杠、螺母、斜铁、压板、弹簧等进行清洗,并调整到适宜的()
A、装配位置
B、运动间隙
C、工作压力
D、刚性变形
参考答案:B
在下列各句的空白处填入一个适当的词,使句子意思完整,语法正确。
1. I want to be a _______. I like helping doctors and looking after patients.
2. Dad, I'm hungry. Can you _______ supper for me?
3. It's very _______ today. Put on warm clothes when you go out.
4. We should take more exercise. It is good _______ our health.
5. You will have a good time _______ you go to the party.
退出胃镜时应注意的事项是()
A.注气
B.尽量抽气,防止腹胀
C.患者深吸气
D.作吞咽动作减少恶心
E.将胃镜先端右旋90°