S700K电动转辙机代号A17/A18的输出额定转换力为()。
A、2500N
B、3000N
C、4500N
D、6000N
参考答案:B
小题1:The theatre has very good access for the (残疾人)
小题2:Mary is an old lady of great ( 尊贵 )
小题3:The Olympic m is “Swifter , Higher , Stronger .
小题4:She went on holiday alone ---- she’s very i .
小题5:She took a year’s leave of a from her job .
小题6:He g from high school and went to college last year.
小题7:My father has ( 辞职 ) as Minster of Education.
小题8:You need a health ( 证明 ) if you want this job.
小题9:The youth should have great a .
小题10:Fresh air is b to one’s health.
小题11:She lost everything she owned as a direct ________________(后果).
小题12:It will take a lot of energy to get them ________________(支持)this policy.
测定焊接接头塑性大小的试验是()。
A.拉伸试验
B.金相试验
C.弯曲试验
D.冲击试验