肺活量是指
A.深吸气量加补呼气容积
B.深吸气量加补吸气容积
C.补吸气容积加补呼气容积
D.潮气容积加补吸气容积
E.潮气容积加补呼气容积
参考答案:A
Last weekend I went to the library __ some books on how to protect environment.[ ]
A. to borrow
B. borrow
C. borrowed
D. borrowing
反映企业某一时点财务状况的会计要素有()。
A.资产
B.负债
C.所有者权益
D.利润
E.费用