为了使岗位工作丰富化,应该考虑的重要因素有多样化、任务的整体性、()、()。
参考答案:任务的意义;自主权
—Where is my umbrella? Must I take it with me, Mum ?
—It's fine today. You take it with you. [ ]
A. can't
B. needn't
C. mustn't
液压挖掘机转台布置的原则是()。
A、左右对称
B、尽量做到质量均衡
C、较重的总成部件靠近转台尾部
D、协调和维修方便