Tom decided _____ his homework at school. [ ]
A. to do
B. do
C. doing
D. does
答案:A
一年内有醉酒后驾驶机动车的行为被处罚2次以上的,吊销机动车驾驶证,()年内不得驾驶营运机动车。
A.1
B.3
C.5
D.7
模具表面硬化处理的目的是降低模具的耐用度。