| When prehistoric man arrived in new
parts of the world, something strange happened to the large animals: they
suddenly became extinct. Smaller species survived. The large, slow-growing
animals were easy game, and were quickly hunted to extinction. Now something
similar could be happening in the oceans. That the seas are being overfished has been known for years. What researchers such as Ransom Myers and Boris Worm have shown is just how fast things are changing. They have looked at half a century of data from fisheries around the world. Their methods do not attempt to estimate the actual biomass (the amount of living biological matter) of fish species in particular parts of the ocean, but rather changes in that biomass over time. According to their latest paper published in Nature, the biomass of large predators (animals that kill and eat other anima A. (A) people should look for a baseline that can’t work for a longer time B. (B) fisheries should keep the yield below 50% of the biomass C. (C) the ocean biomass should be restored to its original level D. (D) people should adjust the fishing baseline to changing situation [判断题]工作地段所有由工作班自行装设的接地线拆除后，工作负责人应及时向相关工作许可人（含配合停电线路、设备许可人）报告工作终结。
A.正确 B.错误 [填空题]电连接线弹簧圈的内径为( )mm。
[填空题]由不同熔断器供电或不同专用端子对供电的两套保护装置的（）不允许有（），如有需要，必须经（）。
[单选题]在硫回收操作中，一级转化器温度较二级转化器温度（）。
A.低 B.差不多 C.高 D.可能高也可能低 [多项选择]下列选项中，不属于项目质量管理的是( )。
A. 质量规划 B. 实施质量保证 C. 实施质量控制 D. 保障项目章程的质量编制 E. 风险的质量控制 [单选题]依据《中国南方电网有限责任公司电力安全工作规程》,工作要求的安全措施应符合()的安全技术要求和现场实际情况,并充分考虑其他必要的安全措施和注意事项。
A.人员安排 B.一次接线图 C.应急方案 D.现场勘查 [多项选择]在Word的页眉页脚中能设置（ ）
A. 字符的字形、字号 B. 边框底纹 C. 对齐方式 D. 分栏格式 [单选题]集团公司第四轮安全生产标准化考核评级标准Q/QJIB147C-2017中要求，运输危险化学品车辆应至少配备（）具灭火器。
A. 4 B. 3 C. 2 D. 1 [判断题]有证据表明期货公司未能充分计提资产减值准备的，中国证监会派出机构应当要求期货公司相应增加负债金额。（ ）
A.正确 B.错误 [填空题]按规定，新技措投用后，必须有明确的工艺（）
[判断题]双线区段内的车站，从靠近站舍的线路起，向远离站舍方向顺序编号。（ ）
A.正确 B.错误 [单选题]《劳动合同法》调整的劳动关系是一种( )。
A.人身关系 B.财产关系 C.人身关系和财产关系相结合的社会关系 D.经济关系 [单选题]95.10m电杆埋设深度宜（ ）。
A.A.1.5m B.B.1.7m C.C.1.9m D.D.2.3m 我来回答: 提交
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