缆风绳的拉力计算式T=Tg+TC中,Tg代表()。
A. 主缆风绳的工作拉力
B. 主缆风绳的初拉力
C. 缆风绳等效拉力
D. 任一缆风绳的拉力
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M: Everything on that shelf is worth fifty cents.
W: But if this is the signature of someone who is well-known, it might bring a lot more. I hear William Shakespeare's signature is worth about a million dollars.
M: Oh? I can hardly read what that one says. Who wrote it?
W: The name looks like "Harold Dobson". Wasn't he a politician or something? I' m going to buy this book and see if I can find a name looks like that in the library.
M: Good luck. Your poetry book may make you rich. But I think my seventy-five-cent mys- tery is a better buy.
Where is the conversation taking place?
A. In a second-hand book shop.
B. In a publisher' s office.
C. In a library.
当机电工程项目施工过程中发生安全事故时,()必须按安全事故处理的有关规定和程序及时上报和处置,并制定防止同类事故再次发生的措施。
A. 项目经理
B. 项目总工程师
C. 部门负责人
D. 工号技术员
电弧稳定、飞溅小、焊道成形美观,脱渣容易,具有良好的工艺性能,适合全位置焊,具有这样特点的焊丝是()。
A. EF×1型药芯焊丝
B. EF×2型药芯焊丝
C. EF×3型药芯焊丝
D. EF×4型药芯焊丝
内部储存或盛装气体、液体、液化气体等介质且不进行化学反应或其他物理、化学过程的容器是()。
A. 热交换器
B. 塔类设备
C. 储存容器
D. 反应器