对液压系统进行手控检查各个（）部件运动是否正常。
A、电气
B、液压驱动
C、气动
D、限位保护
参考答案：B
Mr Brown and his wife expect that by the year 2015 they __________ in Beijing rather than in other cities.
A．are living
B．will be living
C．have lived
D．will have lived
下列不属于开发区环境影响评价中大气环境容量与污染物总量控制的指标因子是( )。
A．烟尘
B．粉尘
C．二氧化硫
D．氮氧化物
