单层厂房长天沟外排水其长度一般不超过()米。
A.80
B.60
C.100
D.150
参考答案:C
Read, judge and correct. 开动脑筋,判断句子正(T)误(F),并将错误的单词在横线上改正。
( ) 1. The weather is hot and sun.
( ) 2. We have breakfast at 7:00 in the morning.
( ) 3. It is June first, Monday.
( ) 4. December is the twelveth month.
( ) 5. Yesterday is Friday, October second.
刮板输送机主要由机头部、()、机尾部组成。