当建筑基坑采用排桩、地下连续墙锚杆结构时,锚杆长度设计应符合一定的构造要求,下述()是正确的。()
A. 锚杆体下料长度应为自由段,锚固段及外露长度之和
B. 土层锚杆锚固段长度不宜小于6.0m
C. 锚杆自由段长度不宜小于5m
D. 自由段长度应超过潜在滑面1.5m
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While using the WebSphere Commerce Accelerator to manage a Hosting hub, which of the following tasks could a Channel Manager perform?()
A. Open and close a store
B. List distributors for the hub
C. Broadcast e-mail to customers of the hub
D. Manage campaigns
E. Create new users or change user attribute
数字微波电路信道监视的是()。
A. 电平监测
B. 误码监测
C. 噪声监测
溴酚蓝分光光度法测定水中三乙胺中,在制备1500mg/L三乙胺标准贮备液时,在100ml的容量瓶中加入蒸馏水50ml,用注射器以()称取三乙胺(),仔细注入容量瓶中,轻轻摇动瓶子,使三乙胺充分溶解。
A. 减量法,0.15g
B. 减量法,0.1500g
C. 减量法,0.15mg