当操作司机不能有效观察物料吊运情况时,应设专人指挥。
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焊件厚度不小于12毫米,则焊条直径应不低于()毫米。
A. 2
B. 3
C. 4
优质服务是标准化服务与个性化服务的统一。
A. 正确
B. 错误
When moored with a Mediterranean moor,the ship should be secured to the pier by having().
A. a stern line and two quarter lines crossing under the stern
B. a stern line,2 bow lines,and 2 quarter lines leading aft to the pier
C. all regular lines leading to the pier in opposition to the anchor
D. two bow lines and two midship lines leading aft to the pier
必须为(),汇款的单笔金额不超过等值5万美元;当日累计不超过等值5万美元。
A. 个人
B. 中学
C. 大学
D. 慈善机构
E. 商场