单项选择题
下列不是铸造应力的防治和消除措施的是()
A.采取同时凝固
B.降低铸型温度
C.进行去应力退火
D.改善铸型和型芯的退让性
点击查看答案&解析
<上一题
目录
下一题>
热门
试题
单项选择题
The book offers some advice about how to make a good ________ on job interviews.
A.attitude
B.appearance
C.effect
D.impression
点击查看答案&解析
单项选择题
收集血液标本的操作哪项不正确()
A.做动脉血气分析的血标本立即注入试管迅速送检
B.测定血清钾.钠.氯的血标本不可摇动
C.做红细胞计数的血标本注入加抗凝剂的容器内摇匀
D.取血后应取下针头,将血液沿试管壁缓慢注入
E.勿将泡沫注入试管内
点击查看答案&解析
相关试题
The main idea of the story is tha...
When we dream,().
Which of the following is true?(...
Why do some people often dream abo...
If the patient is rational and pos...