有一墙背直立的重力式挡土墙,墙后填土由上下两层土组成,如图所示,γ、c、φ、平分别表示土的重度,内聚力及内摩擦角,如果C1≈0,C2>0,问只有在下列()种情况下用郎肯土压力理论计算得到的墙后主动土压力分布才有可能从上而下为一条连续的直线。
A. γ1>γ2,φ1>φ2
B. γ1>γ2,φ1φ2
C. γ1
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迁徒扩散生长的细菌可能是()
A. 普通变形杆菌
B. 肺炎克雷伯菌
C. 黏质沙雷菌
D. 大肠埃希菌
E. 伤寒沙门菌
中危险II级场所直立型、下垂型喷头与端墙的最大距离为()。
A. 1.5m
B. 1.6m
C. 1.7m
D. 1.8m
A three-node cluster experienced a node failure. The resource groups were acquired as cexpected. The node has been repaired,and HACMP has been restarted. How does the operator determine that the node has successfully re-integrated into the cluster?()
A. Use the clstat command.
B. Use the cIRGinfor command.
C. Tail the /etc/hacmp.out file and wait for "node_up_complete" to finish successfully.
D. Tail the /usr/es/adm/cluster.log file and wait for "node_up_complete" to finish successfully.