构件受拉力时,拉力是通过补板接缝一边的铆钉传给补板的。铆钉在传力中要承受()作用。
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A wildcat is a().
A. deeply-grooved drum on the windlass with sprockets which engage the links of the anchor chain
B. winch that is running out of control due to a failure of the overspeed trips
C. line that has jumped off the gypsyhead while under strain
D. nylon line that parts under strain and whips back in a hazardous manner
社会的组成要素不包括()
A. 人
B. 文化
C. 环境
D. 物质
同一施工项目安排辅站原则上不超过()个。
A. 4;
B. 5;
C. 6;
D. 7。
检修工作如不能按计划工期完工,必须由()办理工作延期手续。
A. 工作签发人
B. 工作许可人
C. 工作负责人
D. 工作组成员