Regulations require that tank vessels handling grade B liquids shall have their cargo pumps separated from all sources of vapor ignition by().
A. cofferdams
B. empty cargo spaces
C. gas tight bulkheads
D. areas equipped with power ventilatio
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首次输用右旋糖酐,开始几毫升应缓慢静脉滴注,并在注射开始后严密观察()分钟,出现不正常征象(寒战、皮疹等)时应马上停药
A. 2~4
B. 4~6
C. 5~10
D. 15~30
OSS系统中“流程展示”功能模块中可以对“异常订单”查询,其中“退单查询”就包含在内,请问“退单查询”可以按哪些方式查询()
A. 退单前台
B. 退单次数
C. i运维退单
D. 退单资源