A.tanB=a₀/g
B.tanB=a₀/2g
C.tanB=2a₀/g
A.金属结构或主要受力杆件有可见裂纹,或有未经修复的严重变形
B.起升变幅机构钢丝绳超过《检修规范》规定的检验报废标准
C.紧急断电开关和限位开关失灵
D.紧急防风制动器的制动力矩不符合规定
A.1mm
B.2mm
C.3mm
D.4mm
A.2mm
B.4mm
C.6mm
D.8mm
A.9mm,11mm
B.12mm,15mm
C.12mm,14mm
D.11mm,15mm
A.x=54m,v=145m/s,a=18m/s²
B.x=198m,v=145m/s,a=72m/s²
C.x=198m,v=49m/s,a=72m/s²
D.x=192m,v=145m/s,a=12m/s²