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问题 单项选择题 A1型题

一个病人腹痛已5天，如果怀疑急性胰腺炎，最有诊断意义的指标是（）

A.血清淀粉酶

B.白细胞计数

C.血清脂肪酶

D.血清钙

E.血清正铁血红蛋白

答案

参考答案：C

名词解释

耐阴树种
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单项选择题

The decision whether to add capital equipment to the production process should be based on:（）

A. future value, using the cost of financial capital as a benchmark.

B. present value, using the marginal revenue product of capital as a benchmark.

C. present value, using the cost of financial capital as a benchmark.
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