机动车维修的作业任务是()或者恢复机动车技术状况和正常功能,延长机动车使用寿命。
参考答案:维持
血尿伴肾绞痛最常见的疾病是()
A.肾小球肾炎
B.肾结核
C.膀胱结石
D.输尿管结石
E.多囊肾
—How much did the old man________you for repairing your bike?
—Five yuan. The price is very low.[ ]
A. charge
B. spend
C. cost
D. pay