资产负债表是反映企业在一定时期内的资产、负债和所有者权益情况的表。
参考答案:错
The population of Africa is ____ so rapidly as to cause concern of the whole world. [ ]
A. expanding
B. stretching
C. extending
D. spreading
堆垛机载货台测探光电快关是()
A.漫反式
B.镜反式
C.对射式