下列品种中，（）是按钢的脱氧程度分类的。
A.碳素钢
B.镇静钢
C.平炉钢
D.普通钢
参考答案：B
The world’s population is growing ______, and there is ____ land and water for growing rice.
A．larger; less
B．larger; fewer
C．more; less
D．more; fewer
负债及所有者权益类账户的期末余额一般在（）。
A.借方
B.借方和贷方
C.贷方
D.借方或贷方
