| The climate of earth has fluctuated
quite a bit over the last 4.6 billion years of our planet’s history and it can
be expected that the climate will continue to change. One of the most intriguing
questions in earth science is whether the periods of ice ages are over or arc we
living in an "interglacial" period of time between ice ages The geologic time period we are now living in is known as the Holocene (全新世). This epoch began about 11,000 years ago which was the end of the last glacial period and the end of the Pleistocene (更新世) epoch. The Pleistocene was an epoch of cool glacial and warmer interglacial periods which began about 1.8 million years ago. Since the glacial period known as the "Wisconsin" in North America and "Wrm’ in Europe when over 10 million square miles (about 27 million km2 ) of A. Has the Pleistocene Epoch Ended B. Another Ice Age in the Geologic Future Is Coming C. The Ice Ages: Are They Over D. Glacial Ice Will Be Present in Different Places [判断题]进行调电操作时应避免带供线路过长、负荷过重造成线路末端电压下降较大的情况。
A.正确 B.错误 [单项选择]细菌的繁殖方式是
A. 有性繁殖 B. 菌丝断裂 C. 细胞出芽 D. 无性二分裂 E. 复制 [单选题]扑救砖木结构建筑火灾时,当水源距离火场较远时,采取( )方法供水。
A.接力供水 B.运水供水 C.接力供水或运水供水 D.耦合供水 [单选题]一名携带人员只能持有( )烟草专卖品个人携带证。
A.一份 B.二份 C.三份 D.四份 [单项选择]A. David is fired.
B. David changes his office. C. David gets promoted. D. David earns more than he used to. [单项选择]局域网与广域网、广域网与广域网的互联是通过哪种网络设备实现的______。
A. 服务器 B. 网桥 C. 路由器 D. 交换机 [填空题]事故造成电网大面积停电的，国务院电力监管机构和国务院其他有关部门、有关地方人民政府、电力企业应当按照国家有关规定，启动相应的应急预案，成立（），尽快恢复电网运行和电力供应，防止各种次生灾害的发生。
[判断题]《局铁路旅客运输服务质量规范》紧急制动阀无破封，手柄施封良好，压力表指示正常。
A.正确 B.错误 [单项选择]肉豆蔻与白豆蔻均具有的功效是（）
A. 涩肠止泻，下气平喘 B. 温中散寒，行气消胀 C. 温中行气，燥湿止带 D. 收敛固涩，制酸止痛 E. 涩肠止泻，敛肺止咳 [单选题]泵的扬程是指（ ）。
A.泵的升扬高度 B.泵所提供的总能量 C.泵的静压能和位压能 D.泵出口处压力 我来回答: 提交
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