比2与|-2|的差大1的有理数是 ______.
2-|-2|=0,0+1=1.
故答案为:1.
The lake looks like a big mirror in which the________of the trees is very clear. [ ]
A. shade
B. shadow
C. reflection
D. reaction
为了维持系统稳定,费托合成单元反应器开停工过程中温度升降速率≯()℃/h。
A、5
B、10
C、15
D、25