以下哪个不属于旅游经济效应评价的通用指标()
A、投资创汇率
B、资金利税率
C、资产负债率
D、旅游业总收入
参考答案:C
She devoted herself________to her research and it earned her a good reputation in her field.[ ]
A.strongly
B.extremely
C.entirely
D.freely
(1).5.9~8.0(2).7.3~7.5(3).5(4).6.7~9.1
A.磷酸盐缓冲液
B.硼酸缓冲液
C.硼酸盐缓冲液
D.泪液pH