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【单选题】
下列不属于螺纹联接类型的有A.
三角形螺纹
B.
螺栓联接
C.
紧定螺钉联接
D.
双头螺柱联接
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反馈参考答案：
举一反三
【简答题】Biomass energy is a source of energy. (renewable / non-renewable)
【简答题】现场审核发现,项目部用1号吊车吊管桩预制件,采用的方法是用钢丝绳捆绑在预制件的中间部位起吊,导致预制件受力不均,预制件有裂纹。
【单选题】Why does the author encourage power plants to use biomass?
A.
To prevent the waste of energy.
B.
To increase production safety.
C.
To reduce pollution.
D.
To save money.
【单选题】(paragraph 8) Biomass energy is abundant but
A.
is very expensive to use.
B.
is air-polluting and costly.
C.
is unreliable& expensive to produce.
D.
is environmentally unfriendly.
【简答题】Biomass energy (生物能).often forgotten as a promising alternative (替代物) to oil, received its day in the sun with the gathering of the Bio-Energy World Congress and Exposition in Atlanta, Georgia, late i...
【简答题】对公文用语通常有哪些方面的要求?
【简答题】Biomass energy is a source of energy.
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