小孙5岁的弟弟将桌面上的图标拖得到处都是,他为了重新排列桌面上的图标,首先应在()单击鼠标右键。
A.桌面空白处
B.任务栏空白处
C.我的电脑
D.网上邻居
参考答案:A
关于咬创伤,哪项是错误的()
A.创伤影响牙周炎症的扩展途径和组织破坏程度
B.创伤可引起牙周炎症
C.慢性创伤常因牙磨损、牙齿突出等因素所致
D.急性创伤常因修复体等医源性因素所致
E.继发性创伤是因牙周组织支持力不是所致
When checking a mooring line,you should().
A.ensure the bight is not fouled between the ship and the dock by taking up slack
B.pay out slack smartly and keep free for running
C.secure more turns to hold the line against any strain,then clear the area
D.surge the line so that it maintains a strain without parting