临时性警告标志是什么颜色的?()
A、蓝色
B、绿色
C、橙色
D、红色
参考答案:C
MLS3-170型采煤机的液压马达为斜轴式轴向柱塞变量马达。()
London is a most beautiful city in Britain, ____ the River Thames.[ ]
A. located in
B. lied on
C. situated on
D. stood in