为什么矿车车辆轮缘与轨道必须保持适当间隙?

题型:问答题

问题:

为什么矿车车辆轮缘与轨道必须保持适当间隙?

考点:煤矿安全生产知识竞赛煤矿运输知识考试煤矿运输知识考试题库
题型:问答题

第一次明确提出“毛 * * 思想”这一概念的人是( )

A.王稼祥
B.刘 * *
C.张如心
D.李大钊

题型:问答题

.

第二卷(共45分)

第四部分:写作(共三节,满分50分)

第一节:单词拼写(共10题,每题1分)

76. She spent many years _______(观察) chimp behavior.                      76._________

77. The ________(争论) among the two parties was blown up by the press.77._________

78. His words are strongly ______(使印象深刻,使铭记) on my memory..       78._________

79. Alison is _______ (稍微) older than the others.                        79._________

80. There are many _______(学说,理论) about the origin of life.             80._________

81. He passed the examination, ________(相反) to what I expected.           81._________

82. She could not _________(解释) for her mistake.                 82._________

83. The doctor advised him to keep a _____(平衡的) diet.                   83._________

85. Everyone has his________(长处) and weaknesses.                      84._________

86. You must ask ________(许可) if you want to leave early..                85._________

题型:问答题

地球表面海洋面积与陆地面积所占的比例约为[ ]

A、60%:40%

B、71%:29%

C、80%:20%

D、79%:21%

题型:问答题

干粉灭火器一经开启必须进行再充装。

题型:问答题

交通事故的现场救护原则?

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