钢筋级别代号HPB235中的HPB是指（）
A.热轧光圆钢筋
B.热轧带肋钢筋
C.冷轧光圆钢筋
D.冷轧带肋钢筋
参考答案：A
测定24小时尿蛋白定量，尿标本中应加人防腐剂()
A．甲苯
B．浓盐酸
C．甲醛
D．碳酸
E．高锰酸钾
The main feature of (72) is that they follow a first-come/first-served rule. For instance, the line of (73) waiting to be run on a computer system.
A．looplinks
B．queues
C．stacks
D．trees
