通信电缆1.2mm铜线芯径的环阻是（）欧。
A.32.8
B.72.2
C.57
D.47
参考答案：A
My friend Li Ming is good at ________. He ________ very well.[ ]
A. cook, cook
B. cooking, cooks
C. cooking, cook
D. cook, cooks
典型的硬脑膜外血肿的意识改变是：（）
A.持续昏迷
B.昏迷→清醒
C.昏迷→清醒→昏迷
D.浅昏迷
E.无昏迷
