【单选题】Let me ______ you______ your clothes . [ ]
【单选题】Always _____________ your teeth! [ ]
【单选题】Your clothes are dirty. They need _________. [ ]
【单选题】Before driving into the city, you are required to get your car ________. [ ]
【判断题】大气质量越大,说明光线经过大气层的路程越长,产生的衰减也越多,达到地面的能量也就越少。
【单选题】How to wash your hands?
A.
wash the hands quickly
B.
wash the hands with the water in the basin
C.
wash the hands continually with the running water and soup
【单选题】Why not wash the dishes?______ is your job to wash them. [ ]
【简答题】转向架构架上所受到的载荷一般包括垂直载荷、横向载荷、( )和各种悬吊装置上所产生的静载荷和动载荷
【单选题】机械天平的一般结构主要包括外框、立柱、横梁和悬挂系统、光学读数系统、制动系统、机械加砝码装置及起码标尺等,其中()是天平的主要部件,有天平心脏之称。
【简答题】You wash your hands with it.