混凝土构件结构性能检验裂缝宽度可用精度为0.2MM的刻度放大镜等进行观测。()
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在地下洞室中钻孔埋设多点位移计,最深点锚头应设置在预计岩体变形范围以外。
A. 正确
B. 错误
深圳证券交易所上市开放式基金(LOF)合同生效后即进入封闭期,该封闭期一般不超过()。
A. 3个月
B. 2个月
C. 4个月
D. 1个月
The best method of protecting that portion of a fiber anchor line nearest the anchor from chafing on the bottom is by().
A. Using a small scope ratio
B. Replacing that portion with a short length of chain
C. Using a hockle to keep that portion of the anchor line off the bottom
D. Using a synthetic line