按桩的承载形状分为（）
A、预制桩
B、摩擦型桩
C、端承型桩
D、混凝土灌注桩
参考答案：B, C
---I will drive to the station to buy a ticket to Beijing for next Sunday.
---______? Actually you can order a ticket online.
A．Why bother
B．What for
C．So what
D．Why not
某地10月份价格指数是1.8，3月份的价格指数是1.5，则通货膨胀率为( )
A．1.2 B．0.12C．0.02 D．0.2
