Entrance Light Vessel beamed port,stopped eng.& Tug Ever took pilot off.From this remark,the ship is likely().
A. making inward operation
B. making outward operation
C. making cargo operation
D. at anchor
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当炉出口温度调节器输出信号最大时,而炉出口温度还调不起来的原因是什么?如何处理?
根据《浙江省水功能区、水环境功能区划分方案》,浙江省共划分水功能区1133个,其中划分饮用水源区()个。
A. 107
B. 327
C. 326
D. 84
脚手架纵向相邻立杆之间的轴线距离叫()
A. 立杆步距
B. 立杆跨距
C. 立杆纵距