煤在保管过程中,要做好()等工作,即煤的“五防”养护工作。
参考答案:防变质、防氧化自燃、防雨汛、防风耗、防丢失
Mike is taller than __ students in the class.
A.any
B.any other
C.all
D.everyone
9,4,7,-4,5,4,3,-4,1,4,( ),( )。
A.0 4
B.1 4
C.-1 -4,
D.-1 4