某工种生产产品的品种单一、变化较小而产量较大时,宜采用()来计算定员人数。
A.产量定额
B.单项定额
C.工时定额
D.综合定额
参考答案:A
—Would you like me to help you with the maths problem?
—___________ It’s a most difficult one.
A.With pleasure.
B.Why not?
C.That’s all right.
D.It’s my pleasure.
概述五四时期李大钊的报刊活动。