题目内容

主要用于冷热水管、消防水管系统、工业管道系统。

A. 丁烯管
B. PVC-U管
C. PVC-C管
D. PPR管

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听力原文： Mr. Stone. This is Cynthia Riddles from the Northwest Gazette. I am calling to thank you for your past support and to invite you to this year's charity auction. We are currently raising money for Habitats for Humanity's new homeless shelter. The auction will be on Saturday, June 10th at the Starlight Inn. You can call us at 828-2225 to reserve your ticket. Thanks for your support. We look forward to seeing you there.
What is Cynthia hoping to accomplish？

A. Sell tickets to the auction.
Build a homeless shelter.
C. Arrange a meeting.
D. Make a donation.

套利是期货投机的特殊方式,其丰富和发展了期货投机的内容,并使期货投机不仅仅局限于期货合约绝对价格的水平变化,而是更多地转向期货合约相对价格的水平变化。()

A. 正确
B. 错误

商业企业与工业制造业企业，对于购入的存货发生的运杂费，均应计入存货采购成本。()

A. 正确
B. 错误

投资目标的分解方法有()。

A. 按投资构成分解,按子项目分解,按时间进度分解
B. 按投资资金分解,按子项目分解,按时间进度分解
C. 按投资构成分解,按项目分解,按时间进度分解
D. 按投资构成分解,按项目分解,按空间进度分解