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党的建设必须坚决实现哪些基本要求?
抢救有机磷中毒发生呼吸衰竭的对症措施是()
请说出GPRS计费数据的收集规则。
除了纯实木门的环保比较好之外,哪种门的环保比较好?纯实木的门是不是也是由一块一块木板组成的啊?
报表引用参数格式正确的是()
检测和校准设备(包括硬件和软件)应得到保护以避免发生致使检测和校准结果的()调整。
堆积密度小于()kg/m3的多孔轻质骨料统称为轻骨料。
轨道起重设备操作人员须持有起重设备操作证上岗,轨道起重设备进行装卸作业时,须指派有经验的()做现场指挥,并设专人防护,严格执行起重作业的相关规定。
编制商业计划的作用是什么?
万用表的表头是一个()测量机构。
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The packing installed in the pump stuffing box is lubricated by ().
The packing installed in the pump stuffing box is lubricated by ().
Why are removable sleeves installed on centrifugal pump shafts?()
Why are removable sleeves installed on centrifugal pump shafts?()
在规定包装条款时,一般不宜采用“海运包装”(Seaworthy Packing)和“习惯包装”(Customary Packing)之类的术语
()the packing is the same, the lots are different inmarks.
()the packing is the same,the lots are different in marks.
Poor packing will cause much trouble()delivery.
Which pump is the self-priming pump?()
The ()pump is usually used as the emergency bilge pump.