The most common method of securing a line to a cleat is a().
A. half hitch,then round turns
B. round turn,then figure eights
C. figure eight,then round turns
D. figure eight,then half hitche
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高炉内铁矿石从入炉到软熔前分布的区域,称做()。
A. 软熔带
B. 滴落带
C. 风口带
D. 块状带
An auxiliary reservoir for starting auxiliary engines should be kept at ().
A. low pressure at all times
B. full pressure at all times
C. low pressure at intermittence
D. full pressure at intermittence
下列风险提示中哪项不是管路安装标准化操作中的风险提示()
A. 刮伤
B. 触电
C. 压力介质伤人
D. 砸伤
在国际市场上,期货交易发展迅速,已经大大超过了股票交易和期权交易。( )
A. 正确
B. 错误