| For more than thirty years after
astronauts first set foot on the Moon, scientists have been unable to unravel
the mystery of where the Earth’s only satellite came from. But now there is
direct evidence that the Moon was born after a giant collision between the young
Earth and another planet. Previous studies of rocks from the Earth and the Moon have been unable to distinguish between the two, suggesting that they formed from the same material. But this still left room for a number of theories explaining how—for example, that the Moon and Earth formed from the same material at the same time. It was even suggested that the early Earth spun so fast it formed a bulge that eventually broke off to form the Moon. Franck Poitrasson, and his colleagues at the Swiss Federal Institute of Technology have compared Moon rocks with A. The Moon was born after a giant collision between the young Earth and another planet. B. The Moon rocks had a higher ratio of iron 57 to iron 54 isotopes than the Earth rocks. C. The Moon and the Earth have almost the same portion of iron. D. This catastrophic collision would have released much more energy than the impact believed to have wiped out the dinosaurs. [单选题]双线自动闭塞区间非到发线发车行车凭证为（）。
A.调度命令 B.路票 C.绿色许可证 [单项选择]负责执业药师继续教育管理的是
A. 中国药品生物制品检定所 B. 省级药品检验所 C. 国家药典委员会 D. 执业药师资格认证管理中心 E. 药品评价中心 [单选题]自锁装置失效,将导致变速器( ).
A.自动掉挡 B.乱挡 C.异响 D.挂不上挡 [单项选择]本症如手术治疗，术中及术后早期应特殊注意的是
A. 应用抗凝药，防止血栓发生 B. 控制输液量，防止心脏过胀 C. 应用心肌营养药，保护心肌 D. 加大输液量，保证血容量 E. 应用凝血药，防止出血 [单项选择]Liberal(自由)education is becoming the task of teachers. It is (56) not only to teach and learn knowledge, but also to develop a person’s (57) Its (58) is to teach each student to think for himself and make (59) decisions. Now liberal education has a great (60) on the world. Much work has been done to find better way of teaching.
In a liberal class, students are (61) to have their own thoughts and their own ideas when they have lessons which are often held in the form of (62) . They are properly guided to (63) the knowledge learned. Punishment (64) exists. Teachers and students are just like (65) . The (66) is of course a perfect one if it can really be (67) However, it only exists in the imagination and will never be (68) We must (69) that children should at least be guided properly. Just close your eyes and think how many students will (70) the du A. quick B. wise C. wild D. wide [多选题]国家电网公司战略目标中国际领先“六个领先”包括（）
A.经营能力领先 B.企业治理领先 C.核心技术领先 D.绿色发展领先 E.服务品质领先 F.品牌价值领先 [填空题]行政执法机关违反国家规定，将应当上缴国家的罚没财物，以单位名文集体私分给个人的，构成的罪名是（ ）。
[单选题]在66、110kV带电线路杆塔上工作，作业人员活动范围及其所携带的工具、材料等，与带电导线最小安全距离不准小于（）m。
A.1.0 B.1.5 C.3.0 D.4.0 E.略 F.略 [单项选择]苦杏仁种皮表皮的特征是
A. 表皮为一层薄壁细胞，散有橙黄色石细胞 B. 表皮为一层薄壁细胞，无石细胞 C. 种皮表皮为石细胞，石细胞切向延长 D. 种皮表皮为石细胞，石细胞径向延长 E. 种皮为二层石细胞 [多选题]以下（ ）是轨道电路划分及命名原则。
A.信号机前后应划分成不同的区段，凡有信号机的地方均设有轨道绝缘，其前后为两个不同的轨道电路区段以从千分之。 B.凡能平行运行的进路，其间应设轨道绝缘隔开，渡线上的绝缘，及能构成平行进路的前后道岔，中间都应装设轨道绝缘。 C.每一道岔区段的轨道电路内所包括的道岔数不得超过三组，交分道岔不得超过两组。这是因为道岔太多了，轨道电路分支漏阻影响大，不易调整。 D.场段里，有时为了适应列车通过道岔后及时使道岔解锁，为排列新的进路创造条件，要将轨道电路区段划短，以提高咽喉通过能力。 我来回答: 提交
|
