检定：就是进行去皮重、设置零点、设置满量程值，并使称在满量程内的显示值与所称的实际物重值之间的误差满足精度千分之一要求的过程。
参考答案：错
解读下列表格可知表意在向我们传达下列哪一信息
A．非洲独立年
B．黑暗大陆
C．美国后院
D．东欧消费者的天堂
Having been attacked by terrorists, ______.[ ]
A. doctors came to their rescue
B. the tall building fell down
C. an emergency measure was taken
D. warnings were given to tourists
