静息时细胞膜两侧存在内负外正的电位差,称为
A.复极化B.去极化C.极化D.超极化
参考答案:C
用正确的连词填空.
1. I wanted to know _____ he was late for school again.
2. The teacher thought _____ he was a good student.
3. Danny asked _____ he could eat the vegetables or not.
4. They try to find _____ shoes they are.
5. Could you tell me _____ you were just now?
依据《气瓶安全监察规程》发生交通事故后的车用气瓶()
A.应对车用气瓶、瓶阀及其他附件进行检验,检验合格后方可重新使用。进行检验
B.如果未损伤直接使用
C.视情况而定