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【单选题】
某冻土的冻胀率为5%,则该冻土的冻胀性为( )。A.
不冻胀土
B.
弱冻胀土
C.
冻胀土
D.
强冻胀土
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【多选题】5 :下面那些属于网架构造注意事项?
A.
要弄清每一根材料受着怎样的力，轴向受压而不产生弯曲的关键是粗度 ( 严格说是粗度与长度的比例 ) ，并应全面考虑截面的形状 ( 如柜架构造 )
B.
细长材料受到与轴向垂直的作用力时很容易变形，所以着力点最好是材料的结合部，这样将变成压力沿轴向传递而不使材料弯曲；
C.
将全部节点做成铰节，由于其不能传递材料之间的压力和拉力，所以无论哪里都不传递弯曲力
D.
材料自身虽不弯曲，但有倒塌变形的可能，故应把材料结合成三角形。
【简答题】P为线段AB中点时,(ABP)为( )。
【简答题】Only after I had reached the airport __________that I had forgotten to take my ticket with me. A) I realized B) have I realized C) did I realize D) I had realized
【简答题】I seem to have reached a rather gloomy conclusion, but I think that something cheerful may still be derived ________ it. A) of B) off C) from D) with
【单选题】I seem to have reached a rather gloomy conclusion, but I think that something cheerful may still be derived ______ it.
A.
of
B.
off
C.
from
D.
with
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