当年形成的纸质会计档案,在会计年度终了后保管()年,期满后移交档案管理部门统一归档保管
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HXD1C机车运行速度在()KM/H以上时,实施电制动才有效
A. 3
B. 4
CCB-Ⅱ制动系统中,RIM模块中有()个惩罚制动中间继电器
A. 1
B. 2
别人上周日是否有看电视,应该怎么表达()
A. Did you watched TV last Sunday?
B. Did you watch TV last Sunday?
C. Are you watched TV last Sunday?
问你爸爸昨天有没有踢足球,应该怎么表达()
A. Did you play football yesterday?
B. What did your father do yesterday?
C. Do you played football yesterday?