在选择测量仪器的最大允许误差时,通常应为所测量对象所要求误差的______。
A.1/3~1/2
B.1/2~1
C.1/5~1/3
D.1/10~1/5
参考答案:C
When the earthquake, a destructive natural disaster, happened, ninety-nine coal miners were trapped
in the coal mine _____the ruins, waiting _____. [ ]
A. in; to be rescued
B. under; for being rescued
C. in; to rescue
D. under; to be rescued
美国历史学家斯塔夫里阿诺斯在《全球通史》中写道: “18世纪末叶, 欧洲人对中国的钦佩开始消逝……欧洲人开始对中国的自然资源比对中国的文化更感兴趣。”欧洲人对中国的态度发生转变的根本原因( )
A.新航路的开辟
B.欧洲国家的殖民扩张
C.工业革命的开展
D.对中国文化的认识加深