| The ocean bottom a region nearly 2.5
times greater than the total land area of the Earth is a vast frontier that even
today is largely unexplored and uncharted. Until about a century ago, the
deep-ocean floor was completely inaccessible, bidden beneath waters averaging
over 3 600 meters deep. Totally without light and Subjected to intense pressures
hundreds of times greater than at the Earth’s surface, the deep-ocean bottom is
a hostile environment to humans, in some ways as forbidding and remote as the
void of outer space. Although researchers have taken samples of deep-ocean rocks and sediments for over a century, the first detailed global investigation of the ocean bottom did not actually start until 1968, with the beginning of the National Science Foundation’s Deep Sea Drilling Project (DSDP). Using techniques first developed for the offshore oil and A. Geologists were able to determine the Earth’s appearance hundreds of millions of years ago. B. Two geological theories became more widely accepted. C. Information was revealed about the Earth’s past climatic changes. D. Geologists observed forms of marine life never seen before. [单项选择]诊断代谢性酸中毒的主要依据是（）
A. 呼吸浅而慢，血浆二氧化碳结合力下降 B. 呼吸深而快，血浆二氧化碳结合力上升 C. 呼吸深而快，有酮味，血浆碳酸氢根值下降 D. 呼吸困难，血浆碳酸氢根值上升 E. 呼吸慢，心律慢，血压高，神志不清 [判断题] ( )试进口管线压力,要达到预计工作压力的1倍,稳压5min。
A.正确 B.错误 [判断题]密切联系各科任课老师．及时反映同学对教学的建议和要求，是班长的职责。（ ）
[判断题]KZS/M-Ⅱ型轴报器当使用模拟式传感器时，计算机不断地向模拟传感器发出温度转换命令。
A.正确 B.错误 [单选题]昼间左臂向左下方，右臂向右下方各斜伸45度角，是（ ）股道号码手信号的显示方式。
A.四道 B.六道 C.九道 D.十道 [单项选择]下列关于气胸的描述，正确的是（）
A. 气胸区域可见到肺纹理 B. 张力性气胸，纵隔可向健侧移位 C. MRI对本病的诊断价值最高 D. 不同病因气胸的影像表现不同 E. 单纯性气胸：立位胸片示外高内低致密影 [判断题]转K5型转向架选配。换装自由高为289mm、识别标记为K5-269的减振外圆弹簧。根据枕簧上标注的尺寸，挑选同转K5型转向架选配。一转向架同型外圆弹簧自由高度差≤3mm。
A.正确 B.错误 [单选题]当变压器外部故障时，有较大的穿越性短电流流过变压器，这时变压器的差动保护（）。(1.0分)
A.立即动作 B.延时动作 C.不应动作 D.短路时间长短而定 [单项选择]治疗血淋实证的主方为（）
A. 八正散 B. 沉香散 C. 龙胆泻肝汤 D. 程氏革薢分清饮 E. 小蓟饮子合导赤散 [单选题]长轨车运行中，人员必须离开轨端（） m以外，并严禁在长轨上走动；
A.1 B.2 C.3 D.5 [多选题]通过退火可以（）。
A.A.提高钢的硬度 B.B.降低钢的硬度 C.C.提高塑性 D.D.降低塑性 E.E.细化晶粒 [简答题]第一、二种工作票如何办理延期手续？
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