“器材处理亏损”核算建设单位发生的设备盘亏减盘盈后的净损失和设备毁损。
参考答案：错
爆破时，导火索燃烧的速度是每秒0.9cm，点导火索的人员需要跑到离爆破点120m以外的完全区域，已知这个导火索的长度为18cm，那么点导火索的人每秒钟跑6.5m是否安全？
Many kinds of help ________ by plane or by train to the area ever since the earthquake hit it.
A．had been offered
B．have been offered
C．are offered
D．were offered
