【单选题】These goods emit flammable gases in contact with water.keep them dry
A.
Please keep the flammable goods away from water
B.
Please keep these goods away from the engine room
C.
Please keep these goods away from water
D.
Please keep these goods in liquid form
【单选题】These goods emit flammable gases in contact water. Keep them dry.
A.
Please keep the flammable goods away from water
B.
Please keep these goods away from water.
【判断题】机械连接套筒的横向间距离不宜小于25mm。
【单选题】One of the main reasons for air pollution is that many cars emit smoke into the at-mosphere.
【简答题】The moon does not emit heat. ______ (它也不发光).