0.042里面有______个0.001,18个0.1是______.
0.042里面有42个0.001,18个0.1是1.8,
故答案为:42,1.8.
关于消防宣传与消防教育培训的说法错误的是()。
A.原则相同
B.目标相同
C.对象相同
D.内容不同
As compared to carbon dioxide,dry chemical has which advantage?().
A.Cleaner
B.Effective on metal fires
C.Greater range
D.More cooling effect