输送液态物料的设备是（）。
A.压缩机
B.泵
C.链斗
参考答案：B
is known to all is that the Diaoyu Islands have belonged to China since ancient times.
A．As
B．It
C．What
D．That
我国的海陆位置与下列哪个国家相似？[ ]
A．蒙古
B．日本
C．巴西
D．英国
