临边作业的防护主要为设置防护栏杆,规定上杆距地高度_m。
A. 0.8一1.0
B. 1.0~1.2
C. 1.2一1.4
D. 1.0~1.4
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术后腹壁切口裂开腹腔脏器膨出体外应采取()。
A. 蝶形胶布粘合
B. 立即缝合
C. 绷带包扎
D. 消毒单包裹
E. 平卧床上,不活动,等待自然愈合
通过钻→扩→铰加工,孔直径通常能达到的精度等级为()。
A. IT5~IT6
B. IT6~IT7
C. IT7~IT8
D. IT8~IT9
Langue refers to the a()linguistic system shared by all the members of a speech community while the parole is the concrete use of the conventions and application of the rules.