修理机械、电气设备时,必须在开关处挂上()的警示牌,并应有专人看守。
A. “注意安全”
B. “有电,危险”
C. “有人工作,严禁合闸”
D. 正在维修,小心危险&rdquo
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其他条件不变且不受限,增加气压高度对飞机的允许起飞重量有什么影响?()
A. 允许的起飞重量在5000ft以下不受限
B. 允许的起飞重量减小
C. 允许的起飞重量增加
D. 允许的起飞重量不受影响
The difference between Fixed pitch propeller (FPP) and Controllable pitch propeller (CPP) is in that()
A. for FP, once fitted, the position of the blades can also be changed in operation
B. for CP, once fitted, the position of the blades can also be changed in operation
C. the CP type has a relatively smaller hub compared with the FP propellers
D. the FP type has a relatively larger hub compared with the CP propeller
压力管道安全管理院不需要参与管道检验、修理和报废工作。
A. 正确
B. 错误
农户在办理存款业务,农户终端提示“余额不足或已欠费”应当是管理员的绑定卡()。
A. 丢失
B. 消磁
C. 已欠费
D. 余额低于存款额