按照沟通的信息是否有反馈，沟通可以分为（）。
A.单向沟通和双向沟通
B.纵向沟通和横向沟通
C.内部沟通和外部沟通
D.正式沟通和非正式沟通
参考答案：A
_____ to drive after drinking, some drivers are still trying their luck, which is dangerous.
A．Not reminded
B．Reminded not
C．Not having been reminded
D．Having reminded not
在酸浴加热器中，（）属于温度较低的流体。
A、蒸汽
B、酸浴
C、水
D、冷凝水
