护士小张,在给患者测体温时不小心将水银体温计摔碎在病房水泥地面上,小张的下列紧急处理措施错误的是()。
A、将患者转移到室外
B、开窗通风
C、打开室内所有热源,促进汞的快速消散
D、处理地面汞滴时应穿戴防护用品
E、如果有皮肤接触,立即用水冲洗
Escaping a fire is a serious matter. Knowing what to do during a fire can save a life. It is important to know the ways you can use and show them to everyone in the family, such as stairways and fire escape, but not elevators. From the lower floors of the building, escape through windows is possible. Learn the best way of leaving by the window with the least chance of serious injury.
The second floor window is usually not very high from the ground. An average person, hanging by the fingertips will have a drop of about six feet to the ground. It is about the height of an average man. Of course, it is safer to jump a short way than to stay in a burning building.
Windows are also useful when you are waiting for help, be sure to keep the door closed before opening the window. Otherwise, smoke and fire may be drawn into the room. Keep your head low at the window to be sure you get fresh air rather than smoke that may have leaked(渗入) into the room.
On a second or a third floor, the best windows for escape are those which open on a roof. From the roof a person can drop to the ground more safely. Dropping onto cement(水泥地) might end in injury. Bushes and grass can help to break a fall.
Which of the following should not be used when trying to escape a fire?
A.windows.
B.elevators.
C.fire escapes.
D.stairways.
小王用推车将重100N的垃圾运到垃圾箱的过程中,刚好在水平大理石地面和水泥地面上各匀速运动了20m,比较在两段路面上做功的情况,下列说法正确的是
[ ]
A.推力和摩擦力是一对平衡力,所以没做功
B.推力和摩擦力是一对相互作用力,所以没做功
C.在水泥地面上的摩擦力大,所以做功多
D.两段路面做的功一样多
谷某由于操作不当将丙酮晒在水泥地面上,未采取任何措施就离开了现场,会( )。
A、导致血液窒息
B、导致细胞内窒息
C、导致呼吸系统过敏
D、导致中枢神经抑制
E、刺激皮肤和眼睛
试从降温与防止地面泛潮的角度来分析南方地区几种室内地面(木地板、水泥地、磨石子地或其他地面)中,在春季和夏季哪一种地面较好?该地面外于底层或楼层时有无区别?
跑步时,最好选择在()上,减小地面对关节的冲击力,从而避免造成损伤。
A、土路
B、水泥地
C、塑胶跑道
D、沥青地