我国网络域名系统的管理机构是（） ["中国互联网络信息中心（CNNIC.","国家工商局","国家信息化办公室","信息产业部"]
绝缘手套的试验周期是（）。 ["每年一次","六个月一次","五个月一次"]
下列哪种麻醉方法不属于局部麻醉（） ["表面麻醉","局部浸润麻醉","局域阻滞麻醉","吸人麻醉","神经阻滞"]
以下医用卫生材料及敷料，需要检查吸水时间要求在10秒以内的是（） ["医用绷带","医用纱布","创可贴","医用橡皮膏","医用棉花"]
Which three statements are true regarding the logical structure of the Oracle database？（） ["Each segment contains one or more extents.","Multiple tablespaces can share single data file.","A data block is the smallest unit of I\/O for data files.","It is possible to have tablespaces of different block sizes in a database.","Each data block in the database always corresponds to one OS block."]
铅球成绩的丈量方法是钢尺的（）对准铅球落地的近沿，钢尺通过（），丈量落地最近点至抵趾板内沿的最近距离。
