问题
单项选择题
压力容器法兰盘、底板等处都要确保（），不泄漏。
A.密封
B.防止水击
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
压力容器法兰盘、底板等处都要确保（），不泄漏。
A.密封
B.防止水击
参考答案：A
| 完型填空。 | ||||
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