【单选题】
“叫水”方法只适用于相对容水量___的小型锅炉。
A. 较小
B. 最小
C. 较大
D. 最大
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答案
C
解析
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焊接环形链出现___情况之一时应予报废。
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安装好的桅杆在投入使用前，必须满足___。
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【多选题】
在桅杆滑移法吊装试吊过程中，发现有哪些现象时，应立即停止吊装或者使工件复位，判明原因妥善处理，经有关人员确认安全后，方可进行试吊___。
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