开新炉前,要对三通阀、旁通阀和水封逆止阀在机旁控制柜上手动操作一次,确认动作到位,信号无故障,并将三通阀置于()位,水封逆止阀置于()位。
参考答案:放散;关闭
阅读短文,并回答问题。
Jack is an American student. He is twelve now. His school is not very large. But it is very beautiful. There're
many trees and flowers in it. There is a playground in it, too. Jack likes to play football in the playground. He
always plays football with his classmates after school.
Jack's parents are doctors. They love Jack very much. Jack has a happy family.
1. Is Jack American or English ?
2. How old is he ?
3. Is his school large ?
4. What does Jack like to do after school ?
5. What's Jack's mother's job ?
1周后,病人因下腹疼痛,持续性 * * 流血,入院妇科检查, * * 少量血液,宫口闭,有举痛,子宫中位,大小不清,后穹隆饱满,此时简单可靠的诊断方法是()。
A.腹腔镜检查
B.腹部拍片
C.后穹隆穿刺
D.子宫内膜病理学检查
E.腹壁穿刺术