第四章管道终端安装

1.Are seismic-sensing shut-off valves mandatory in new construction? 1.地震感应式截止阀在新建项目中是？

A. Recommended A. 建议使用

B. Mandatory B. 强制使用

C. Prohibited C. 禁止使用

D. Optional D. 可选

2.Seismic-sensing shut-off valves must comply with which standard? 2.地震感应式截止阀必须符合的标准是？

A. ANSI Z124 A. ANSI Z124

B. CSA Z21.93 B. CSA Z21.93

C. CPC Chapter C. CPC Chapter

D. Title 24 D. Title 24

3.What is strictly prohibited during shut-off valve installation? 3.截止阀安装时严禁的操作是？

A. Vertical installation A. 垂直安装

B. Reverse installation B. 反向安装

C. Use a wrench C. 使用扳手

D. Mark the valve D. 标记阀门

4.What must be added when installing large-size valves? 4.对于大规格阀门，安装时必须增加？

A. Dedicated bracket A. 专用支架

B. Decorative cover B. 装饰罩

C. Electronic display screen C. 电子显示屏

D. Spare valve D. 备用阀门

5.At least how often must gas shut-off valves undergo an air-tightness test? 5.燃气截止阀每年至少需进行几次气密性检测？

A. Once a month A. 每月一次

B. Once every six months B. 每半年一次

C. Once a year C. 每年一次

D. Once every two years D. 每两年一次

6.How often should a valve be opened and closed to prevent sticking? 6.为了防止截止阀卡顿，建议的日常维护频率是？

A. Daily A. 每天

B. Once or twice a mont B. 每月1-2次

C. Once every six months C. 每半年一次

D. Never D. 从不

7.The primary function of a shut-off valve in a system is? 7.截止阀在管道系统中的主要功能是？

A. Increase pressure A. 增加压力

B. Control the flow of the medium B. 控制介质通断

C. Alter the composition of the medium C. 改变介质成分

D. Filter out impurities D. 过滤杂质

8.What testing is required after valve installation? 8.安装截止阀后应进行的必要测试包括？

A. Continuity and leakage test A. 通断及泄漏测试

B. Flow test only B. 仅流量测试

C. Vibration test only C. 仅振动测试

D. Pressure test only D. 仅压力测试

9.Emergency valves must be ensured to be? 9.紧急阀门在安装时必须确保？

A. Concealed within the wall A. 隐藏在墙内

B. Clearly marked and easy to operate B. 标识清晰且易于操作

C. Locked in place and immovable C. 锁死无法移动

D. Painted red D. 喷涂成红色

10.What is the recommended period for inspecting valve seals? 10.检查阀门密封件的推荐周期是？

A. 1–2 months A. 1-2个月

B. 3–6 months B. 3-6个月

C. 1 year C. 1年

D. 2 years D. 2年

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