问题
问答题 简答题
截止阀的密封原理是什么?其功用特点如何?
答案
参考答案:
截止阀依靠阀杆压力,使阀瓣密封面与阀座密封面紧紧贴合,阻止介质流过。
其主要作用是切断,也可粗略调节流量,但不能作调节阀使用。
截止阀的密封原理是什么?其功用特点如何?
参考答案:
截止阀依靠阀杆压力,使阀瓣密封面与阀座密封面紧紧贴合,阻止介质流过。
其主要作用是切断,也可粗略调节流量,但不能作调节阀使用。
97.Because Web servers are platform and application (1) , they can send or request data from legacy or external applications including databases. All replies, once converted into (2) mark-up language, can then be transmitted to a (3) . Used in this way, Intranets can (4) lower desktop support costs, easy links with legacy applications and databases and, (5) all, ease of use. |
(1)
A.coupled
B.dependent
C.independent
D.related