放线菌素抗肿瘤作用机制是（）。 A．引起DNA链间交联，妨碍双链拆开  B．插入DN

健康相关生活质量评价的内容不包括（）

A.躯体健康

B.情绪反应

C.生活爱好

D.社会功能

E.主观满意度

下列实例中，用热传递方式改变物体内能的是（　　）

A．两手相互摩擦，手心发热

B．将烧红的工件放入冷水中，逐渐凉下来

C．给自行车打气，气筒壁会发热

D．天空中的流星托着一条发光的长尾巴

A型行为类型评定量表属于（）

A.自评方法

B.他评方法

C.投射方法

D.操作方法

United Corporation and Intrepid Company are similar firms operating in the same industry. United follows U.S. Generally Accepted Accounting Principles and Intrepid follows International Financial Reporting Standards. At the end of last year, Intrepid had a higher inventory turnover ratio than Intrepid. Are the following plausible explanations for the difference Explanation 1: United accounts for its inventory using the first-in, first-out method and Intrepid uses the last-in, first-out method. Explanation 2: United recognized an upward valuation of inventory that had been previously written down. Intrepid does not revalue its inventory upward. Explanation 1 Explanation 2（）① NoYes ② YesNo ③ NoNo

A. ①

B. ②

C. ③

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