水泥混凝土抗压强度的测试试件的立方体标准尺寸是20×20×20厘米,其中骨料最大粒径是40毫米。
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When a vessel navigates in an area with a small underkeel clearance but with adequate space to take avoiding action she().
A. should not be regarded as a vessel constrained by her draught
B. should be regarded as a vessel constrained by her draught
C. shall be regarded as a vessel restricted in her ability to maneuver
D. should be regarded as a non-displacement vessel
在iBatis框架的配置文件中,使用()属性定义缓存模型,可以很容易地缓存查询返回的数据集。
A. LRU
B. oscache
Cache Model
D. FIFO
作业前做好安全预想,参加工区作业准备会,做好安全预想,制定相应的(),领取作业任务。
使用油前,应先对油罐进行(),提前检查需使用到管线伴热,如伴热未通则要及时开通伴热。