卸料前要找好放车的位置,把车支好,然后再卸料点的下上方向()米处打好防治跑车的装置,把车支稳后方可作业。
A.50
B.100
C.150
D.200
参考答案:A
②所在地区的主要粮食作物是( )
A.水稻
B.小麦
C.玉米
D.高粱
A certain packing crate contains between 50 and 60 books. How many books are there in the packing crate ?() (1)If the books are counted out by three, there will be one book left over. (2)If the books are counted out by sixes, there will be one book left over.
A.条件(1)充分,但条件(2)不充分.
B.条件(2)充分,但条件(1)不充分.
C.条件(1)和(2)单独都不充分,但条件(1)和条件(2)联合起来充分.
D.条件(1)充分,条件(2)也充分.
E.条件(1)和条件(2)单独都不充分,条件(1)和条件(2)联合起来也不充分.