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【简答题】
板式无砟道岔板生产所采用的各类原材料，应具有制造厂家的质量合格证明书或（）的第三方检测机构出具的质量合格检验报告单。
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反馈参考答案：
举一反三
【单选题】已知一高斯面所包围的体积内电量代数和 ,则可肯定
A.
高斯面上各点场强均为零;
B.
穿过高斯面上每一面元的电通量均为零;
C.
穿过整个高斯面的电通量为零;
D.
以上说法都不对。
【简答题】定额考虑的接桩方法有____、____。电焊接桩按设计接头,以____数计算。硫磺胶泥接头工程 按____计算。
【单选题】American English has changed ________ time. There are several reasons ________ this.
A.
over; for
B.
for; with
C.
in; of
D.
during; about
【单选题】Reasons for why euthanasia was passed in Australia rather than America and Canada cover following except______.
A.
old people share great part in whole Australian population
B.
technology of extending life is advanced in Australia
C.
people gradually recognize that suffering from disease was worse than immediate death
D.
it is easy to deal with the moral and practical implications in Australia
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