扣件式和普通碗扣式钢管脚手架应在外侧立杆0.6m及1.2m高处搭设两道防护栏杆。()
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Ittakesacomprehensivestrategytogrowdatacentercapabilitieswhilecontainingpowerandcoolingcosts.WhichIBMthermalenvironmentsolutioncanbestsupportthisstrategywithnoeffectonperformance?()
A. IBMRearDoorHeateXchanger
B. IBMActiveEnergyManager
C. IBMCalibratedVectorCooling
D. Alloftheabove
移动式操作平台立杆底部和平台立面应分别设置扫地杆、剪刀撑或斜撑,平台应用坚实木板满铺,并设置防护栏杆和登高扶梯。()
当基坑施工设置栈桥、作业平台时,应设置临边防护栏杆。()