液力传动（）。
A.功率损失大、效率低
B.功率损失小、效率高
C.功率损失大、效率高
D.功率损失小、效率低
参考答案：A
横指同身寸
What happened to train travel
A．Trains were stuck in the snow.
B．People couldn’t get train tickets.
C．Many people had to stand on the train.
D．Train travel was suspended because of severe snowstorm.
