煤、太阳能、风能、水的动能,这些能源中,属于不可再生能源的是______.
煤、太阳能、风能、水的动能中,太阳能、风能、水的动能属于可再生能源,煤属于不可再生能源;
故答案为:煤.
A projeet team budgeted US $3,000 for the work performed and has spent US $4,000 to date. If they budgeted US $5, 000 for the work scheduled, what is the cost variance
A) $-1,000.B) $2,000.C) $1,000.D) $-2,000.
当有场外弃土时,场地内挖填不平衡,此时如何编制初始调配方案?