减速箱内有不正常的敲击声的原因之一:抽油机不平衡,()太快。
A、电机
B、冲程
C、冲次
D、传动比
参考答案:C
绒癌脑转移发生昏迷的急救处理,不正确的是()
A.防止抽搐跌倒、咬伤、吸入性肺炎等
B.降低颅内压用甘露醇或山梨醇
C.镇静控制抽搐可用安定,巴比妥或度冷丁等药物
D.及时纠正电解质紊乱及酸碱平衡失调
E.紧急行鞘内注射MTX
一Hey! There is a bag on the ground. Whose is it?
一There is a woman over there. Maybe it's ______.[ ]
A. her
B. hers
C. she
D. herself