Renewable Energy Sources Today petroleum (石油) provides around 40% of the world’s energy needs, mostly fuelling automobiles. Coal is still used, mostly in power stations, to cover one-quarter of our energy needs, but it is the least efficient, unhealthiest and most environmentally damaging fossil fuel (矿物燃料). Natural gas reserves could fill some of the gap from oil, but reserves of that will not last into the 22nd century either. Most experts predict we will exhaust easily accessible reserves within 50 years. Less-polluting renewable energy sources offer a more practical long-term energy solution. "Renewable" refers to the fact that these resources are not used faster than they can be replaced. Hydroelectric (水力发电的) power is now the most common form of renewable energy, supplying a A. renewable B. recyclable C. damaging D. scarce [单选题]应用价值工程进行功能评价时,如果评价对象的价值指数VI<1,则( )。
A.降低评价对象的现实成本 B.剔除评价对象的过剩功能 C.降低评价对象的功能水平 D.不将评价对象作为改进对象 [单项选择]对于财产保险保险利益的时效规定是()。
A. 始终具有保险利益 B. 索赔时具有保险利益 C. 投保时具有保险利益,而索赔时追究有无保险利益 D. 以上都不正确 [单项选择]
W: Hi, Richard, I haven’t seen you for a few weeks. A. He was visiting his uncle. B. He went on a trip. C. He moves to another city. D. He’s been studying. [简答题]综合录井仪硫化氢室外报警器,安装在仪器房顶部靠井场一侧处,架设高度不应超出录井仪器房顶0.3m。
[单项选择]在工程竣工材料中,不包括下述哪一项()
A. 合同文本 B. 竣工图纸 C. 洽商变更记录 D. 工程自用底图 [单项选择]此时重要的护理措施为
A. 卧床休息或减少活动 B. 增加营养 C. 抑制宫缩 D. 子宫颈内口缝合术 E. 抗生素治疗 [多选题]运营安全风险分级管控和隐患排查治理工作坚持_______、_______、________、________的原则。
A.目标导向 B.全面覆盖 C.科学施策 D.闭环管理 [单项选择]某猪场新购入一批仔猪,无明显临诊症状。经实验室检测发现,部分仔猪有猪瘟病毒血症,仔猪免疫猪瘟疫苗后,不能产生抗猪瘟病毒抗体处置感染猪应()
A. 正常饲养 B. 屠宰后出售 C. 隔离后单独饲养 D. 免疫接种后饲养 E. 扑杀后无害化处理 [判断题]重大事故隐患排除前或者排除过程中无法保证安全的,应当责令从危险区域内撤出作业人员,责令暂时停产停业或者停止使用相关设施、设备;重大事故隐患排除后,可立即恢复生产经营和使用。( )
A.正确 B.错误 [单项选择]患者,男性,28岁,左胸外伤后肋骨骨折,极度呼吸困难,发绀,烦躁不安。体检:脉搏细速,血压84/62mmHg,皮肤湿冷,气管右移,颈静脉充盈,头颈部和右胸皮下气肿,左胸廓饱满、肋间隙增宽。呼吸幅度降低,叩诊成鼓音,右肺呼吸音消失。
首要的急救措施是 A. 高流量给氧 B. 快速输血补液 C. 剖胸探查 D. 排气减压 E. 气管切开辅助呼吸 [单选题] 气体的压力P密度ρ温度T三者之间的变化关系是(R为理想气体常数)
A. T=PRρ B. P+Rρ/T C.P=RρT [判断题]( ) 机车属性由始发站(或更换机车站)标记添加,由列车调度员核对确认,漏标记或标记不正确的,由车站值班员核对确认后修改、添加
A.正确 B.错误 [判断题]当供电系统发生故障时离故障最远的保护装置,切除故障。( )
A.正确 B.错误 [单选题]烟幕形成的条件之一是米以下垂直风切变很小
A.30 B.60 C.100 D.50 [单选题]车站小系统对车站内设备及管理用房的通风空调、()系统监控。
A.防排烟 B.给排水 C.照明 D.电扶梯 E.略 F.略 G.略 H.略 [填空题]Women’s minds work differently from men. At least, that is what (1) ______
most men are convinced of. Psychologists view the subject either as a matter of frustration and a joke. Now the biologists have moved (2) ______ into this minefield, and some of them have found that there are real differences between the brains of men and women. And being (3) ______ different, they point out hurriedly, is not the same as being better or bad. There is, however, a definite structural variation between (4) ______ the male and female brain. The difference is a part of the brain that is used in most complex intellectual processes — the link between (5) ______ the two halves of the brain. Research showed that these two halves of the brain had different functions, and that the corpus callosum enable them (6)______ to work together. For most people, the left half is used for word- [判断题]熔断器过热额定温度超过说明书规定值时需更换。
A.正确 B.错误 [判断题]会计制机构可以通过未报备的电话、邮箱、传真、短信平台及网址提供咨询服务。()
A.正确 B.错误 我来回答: 提交
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