作业现场的安全设施、施工机具、安全工器具和劳动防护用品等应符合国家、行业标准及公司规定,在作业前应确认合格、齐备。()
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Your database is functional with a peak load for the last one hour. You want to preserve theperformance statistics collected during this period to be used for comparison when you analyze theperformance of the database in the future. What action would you take to achieve this task()
A. Insert finding directives for ADDM tasks in the future.
B. Create a baseline on a pair of snapshots spanning the peak-load period.
C. Decrease the snapshot interval in the AWR to collect more snapshots during the peak-load period.
D. Set the snapshot retention period in the Automatic Workload Repository (AWR) to zero to avoid automatic purging of snapshots.
男性,72岁。查体见角膜边缘及周围出现灰白色混浊环,是由于下列哪项原因所致()
A. 类脂质沉着
B. 铜代谢障碍
C. 铁代谢障碍
D. 白内障
E. VitC缺乏
32岁,女性患者,不规则发热伴大小关节疼痛月余。查体面部未见红斑,口腔、鼻腔有溃疡,右膝及左踝关节轻度红肿,有压痛,但无畸形。实验室检查尿蛋白(+),颗粒管型(+),外周血白细胞计数3.5×109/L,网织红细胞2.1%,抗核抗体1∶1000(+),LE细胞(-)。该患者可诊断为()
A. SLE
B. 类风湿关节炎
C. 肾小球肾炎
D. 上呼吸道感染
E. 风湿性关节炎