钢材的特性决定了它是工程建设所需要的重要材料之一。
参考答案：对
Have you any idea ______we can do to help those ______are in great need?
A．how; who
B．what; /
C．whether; that
D．what; who
简述腹部包块（假定包块位于左下腹）检查（深部滑行触诊法）
