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【简答题】
The new type of suitcase card designed by our engineers is very ingenious and practical. 8. This kind of bicycle can be folded in half and handy to carry around, especially useful during traveling and traffic jams. 9. The maximum speed of this kind of variable speed bicycle is 30 K/H . 10. These machines have few breakdowns and easy to maintain because of their simple mechanical structure. 11.Compared with other brands, this kind of tire costs less per mile and wears much longer due to its topnotch rubber. 12. This kind of tire is characteristic of nonskid stop on wet road.
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【单选题】为尽可能的避免烙制的时候颜色会发生变化,一般先用 ___ 烙制,等颜色基本稳定以后,再渲染颜色,再烙制,如此交叉反复多次,最终将颜色烙制进板材中,慢慢等颜色逐渐稳定下来达到所需要的效果,烙制也就结束了。
A.
高温
B.
高温与低温交替进行
C.
持续低温
D.
中低温度
【简答题】已知土的抗剪强度指标c=20kPa，ψ=22°，若作用在土中某平面上的正应力和剪应力分别为δ=100kPa、τ=60.4kPa，问该平面是否会发生剪切破坏?
【单选题】已知土的抗剪强度指标 c=20KPa,ψ=22度 ,若作用在土中某平面上的正应力 σ 为 100KPa 和剪应力 τ为 65KPa, 问该平面 的抗剪强度是多少, 是否会发生剪切破坏
A.
60.4KPa，会发生破坏
B.
70.4KPa，不会发生破坏
C.
70.4KPa，会发生破坏
D.
60.4KPa，不会发生破坏
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