柴油机曲轴径向跳动误差大于（）时，应更换曲轴或进行调直修复。
A. 0.8mm
B. 0.08mm
C. 0.6mm
D. 0.06mm
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火焰原子吸收光度法测定水中钠时，其灵敏度随试样溶液酸度增加而降低。
A. 正确
B. 错误
机械的种类很多，他们的用途、性能、构造、工作原理各不相同，通常一台完整的机械包括三个基本*部分。
A. 正确
B. 错误
钢筋连接完毕后，标准性接头连接套筒外应有外露有效螺纹，且连接套筒单边外露有效螺纹不得超过（）。注：P指螺距。
A. 1P
B. 1.5P
C. 2P
D. 2.5P
Which new key architectural element introduced in WebLogic Server l2c should you take advantage of when designing Disaster Recovery Centers with active - passive mode?（）
A. MAN Clusters, because they would allow you to synchronously replicate state in low latency networks
B. WAN Clusters, because they would allow you to asynchronously replicate state in nonlow latency networks.
C. Transaction Log in the database, because you could avoid synchronizing two replication technologies (database and file)
Data Guard, because it is the most effective way to replicate a state across locations
E. GoldenGate, because it is the most effective way to replicate a state across locatio
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