| NASA is releasing several images taken
by the Hubble Space Telescope, which is the closest yet look at the red planet.
Altogether there are four images, which show the entire planet. Each view shows
the planet as it completes one quarter of its daily rotation. In these views the
north polar cap is turned toward the Earth and is clearly visible at the top of
each picture. The images were taken in the middle of the Martian northern
summer, when the polar cap was at its smallest size. During this season the sun
shines continuously on the polar cap. Previous spacecraft observations have
shown that this summertime polar cap is composed of water ice, just like Earth’s
polar caps. The Hubble Telescope pictures reveal that great changes have occurred on the surface of Mars in the past 20 years. The Martian surface is ever changing. Some regions that were dark 20 A. Dust. B. Sand. C. Water ice. D. Volcanic rocks. [判断题]大型养路机械严禁超负荷或带病运转，单次连续作业时间不应超过5h，避免因设备长时间运转加速设备损坏。()
A.正确 B.错误 [单项选择]
A. pleased B. no use C. interesting [单项选择]依照法律规定冻结存款、汇款的，作出决定的行政机关应当在（）日内向当事人交付冻结决定书。
A. 1 B. 2 C. 3 D. 5 [单项选择]《安全监理管理制度》中监理项目部于工程开工前（）进驻现场，向工程项目单位生产副总经理报道并上报《监理大纲》。
A. 五日 B. 四日 C. 三日 D. 两日 [名词解释]肝火上炎
[判断题]内燃机型号中，最右边的字母k表示工程机械用。
A.正确 B.错误 [判断题]手段和目的可以相互转化。
[单选题]中国新民主主义革命胜利的三大法宝:()、武装斗争、党的建设。
A.党的建设 B.党的领导 C.群众路线 D.统一战线 [多选题]《制动效能证明书》是发出列车运行前方途经长大下坡道区间或编入列车的关门车数超过现车总辆数的6%时，提供给机车乘务员的列车车辆制动机状态的证明，记录列车中( )等信息的单据。
A.制动关门车数量 B.自动制动机型号和数量 C.制动保压情况 D.每百吨列车重量的换算闸瓦压力 [判断题]经过调查,发现行政案件的违法嫌疑人死亡的,经公安派出所或者县级公安机关办案部门以上负责人批准,终止调查。
A.正确 B.错误 [单项选择]常规组织透明剂是（）
A. 苯 B. 氯仿 C. 丁香油 D. 二甲苯 E. 香柏油 [判断题] 电压互感器二次负载变化时,电压基本维持不变,相当于一个电压源( )。
A.正确 B.错误 [单项选择]意志通过什么途径对人的健康产生影响
A. 影响自我暗示 B. 影响人的思维方式 C. 影响人的个性特征 D. 影响需要和动机强度 E. 影响认知过程和情绪过程 [简答题]《铁路技术管理规程》对跟踪出站调车有何规定？
我来回答: 提交
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