除设计要求外,承力建筑钢结构构件上不得采用熔焊连接固定电气管路、设备和器具的支架、螺栓等部件,且严禁热加工开孔。( )
参考答案:对
All the neighbors think highly of this family, _________ the parents are treating their child like a friend.
A.why
B.where
C.which
D.that
已知某原油在40℃下用玻璃石油密度计测得的视密度为805.7kg/m3,求该原油的标准密度值。