液力耦合器正常运行的监视参数有哪些？
参考答案：
油箱油位，油质，润滑油、工作油温度、压力，滤网的前后压差，勺管开度。
A transistor radio is sometimes very small. It is very easy to carry…_______, radio broadcasts are better for blind people.
A．Besides
B．However
C．Yet
D．Sometimes
