挖掘机的整机质量直接影响挖掘能力的发挥和机械的稳定性。()
- · 有6位网友选择 对,占比75%
- · 有2位网友选择 错,占比25%
A. 每班或累计10h工作以后
B. 每周或累计工作100h以后
C. 每季或累计50个工作日以后
D. 经常性地
B.每周或累计工作100h以后
C.每季或累计50个工作日以后
D.经常性地
5110B拆除挖掘机的底盘履带跨距可以调整,宽度最大达()m,履带的接地长度增加了()m,为整机提供了最大的作业稳定性。(单选题)A.3.3, 1.1
B.4.4,1.2
C.5.5,1.3
D.6.6,1.4
反铲挖掘机帝用的开挖方法,主要有()几种。(多选题)A.多层挖土法
B.多层接力开挖法
C.沟端开挖法
D.沟侧开挖法
E.沟角开挖法
作业中,当发现挖掘力突然变化,应停机将分配阀压力进行调整。()(判断题)
A、nursing is a difficult word to define because nurses carry out many different activities in various settings
B、nursing is a easy word to define because nurses only carry out some simple activities in hospitals
C、the nursing science is to help others reach maximum function and quality of life by nursing interventions
D、the nursing science is a disciple
A、sick people
B、aged people
C、human being
D、dying people
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