胰头癌时十二指肠低张造影可见十二指肠降部出现双边征或()征,十二指肠曲()。
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An existing master-slave setup is currently using a delayed replication of one hour. The master has crashed and the slave must be "rolled forward" to provide all the latest data. The SHOW SLAVE STATUS indicates the following values: RELAY_LOG_FILE =hostname-relay-bin.00004 RELAY_LOG_POS = 1383 Which command set would make the slave current?()
A. STOP SLAVE; CHANGE MASTER TO MASTER_DELAY =0, RELAY_LOG_FILE = 'hostnamerelay- bin.00004' , RELAY_LOG_POS= 1383
B. STOP SLAVE; CHANGE MASTER TO RELAY_LOG_FILE = 'hostname-relay-bin.00004', RELAY_LOG_POS = 1383
C. STOP SLAVE; CHANGE MASTER TO MASTER_DELAY=0; START SLAVE
D. STOP SLAVE; SET GLOBAL master_delay =0; START SLAVE
起重吊装作业人员应持有建设行政主管部门颁发的特种作业上岗证。
A. 正确
B. 错误
月注入聚合物溶液量为区块内聚合物各注入井月注聚合物溶液量(),单位是104m3/月。
A. 之比
B. 之积
C. 之差
D. 之和
当设备检修完毕,为了检查各连接部分的密封性能,在投入使用前一般都要进行()。