严禁在无极绳绞车运转中（）。
A.处理故障
B.打信号
C.手动制动
D.发语音
参考答案：A
( ) our S/C No.2002016 dated January 8, I now in- form you that the goods will be shipped tomorrow.
A．With reference to
B．Refer to
C．With refer to
D．Referred to
对公众负责
