根据《城镇燃气设计规范》下列装置中不属于城镇燃气设施附属安全装置的是()。
A、紧急切断阀。
B、安全放散装置。
C、可燃气体报警装置。
D、加臭装置。
参考答案:D
If a CV was positive and the SV was positive, what does this indicate ?()
A.The project is over budget, but on schedules.
B.The project is under budget, but behind schedules.
C.The project is under budget, and ahead of schedules.
D.The project is on budget and on schedules.
液气大钳主要有哪些部件组成?