钢丝绳梯、空气救生垫、救生绳发射枪等是抢险救援消防车配备的（）类。
A.呼吸保护器具
B.一般救助器具
C.起重器具
D.切割器具
参考答案：B
DO2000门机配于LCB2系统时其信号为（）连接，配MCSS板时为（）连接。
--What do you think of the furniture on exhibition?
--Well, great! But I don't think much of ______ you bought.
A．the one
B．it
C．that
D．which
