此外，(美国商业组织)保险信息研究所[注3]的罗伯特·哈特维希(Robert Hart wig)说，现有的大多数非寿险保单都是强制性的[注4]。
Moreover, says Robert Hartwig, of the Insurance Information Institute, an American trade body, most existing non-life policies are nondiscretionary.
摘要 ： 针对注气井CO2气窜而造成生产井气油比上升，常规管式泵游动阀打不开而导致的“气锁”问题，研制了CO2驱中空强制拉杆式防气泵。
Abstract : To address the issue of "gas lock" caused by CO2 gas-channeling in gas injection wells, the forced pull rod type hollow gas prevention pump for CO2 flooding has been developed.
注：此错误强制重新启动节点。
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