机械设备的动作试验,应在其润滑、液压、气(汽)动、加热、冷却和电气等系统( )调试合格后方可进行。
A.全面联合模拟
B.单独模拟
C.部分联合模拟
D.同时模拟
参考答案:B
There are _____ rules in our class. [ ]
A. many too
B. too much
C. much too
D. too many
按JG5027—1992《高处作业吊篮安全规则》规定,吊篮上必须有防倾斜装置()