为排除该患者酮症酸中毒，下列哪项检查无意义
A．血酮体测定B．血肌酐C．碳酸氢根浓度测定D．血pH测定E．阴离子间隙
参考答案：B
______comfortably in his chair,my father enjoyed music with his eyes half _______. [ ]
A. Seated;closed
B. Sat;closing
C. Seeding;closed
D. Sitting;close
正常生产过程中，油罐区应每（）个小时巡回检查一次。
A、一
B、二
C、三
D、四
