收取手续费的代销方式下，已发出但尚未收到代销清单的委托代销商品不属于企业的存货。

新陈代谢包括同化和异化过程。

5个月婴儿，生后以母乳喂养，突然发生苍白、呕吐，嗜睡1天，近8小时来抽搐、昏迷。体检：神志不清，呼吸不规则，口唇淡白，面似纸色，双眼凝视，前囟饱满，颈有抵抗，血红蛋白45g/L，红细胞数1.8×10¹²/L，白细胞数12×10⁹/L，中性粒细胞0.54，淋巴细胞0.46，血小板140×10⁹/L，下列各点叙述本病的诊断要点，其中不正确的是：（）

A.纯母乳喂养婴儿突然发生出血倾向

B.突发性失血性贫血伴颅内压升高

C.凝血因子Ⅱ、Ⅶ、Ⅸ、Ⅹ浓度低下

D.颅脑作B型超声波检查可确诊本病

E.应用维生素K后1~2天内出血倾向消失

计算机的应用领域可大致分为6个方面，下列选项中属于这几项的是

A．计算机辅助教学、专家系统、人工智能

B．工程计算、数据结构、文字处理

C．实时控制、科学计算、数据处理

D．数值处理、人工智能、操作系统

An economic expansion has caused Treasury yields to increase and absolute credit spreads to narrow. Which of the following is most likely true（）

A. Relative corporate yield spreads to Treasuries will have increased.

B. The yield ratio of BBB-rated bond yields to AAA-rated bond yields may have increased even as their absolute yield spread has decreased.

C. Even if absolute credit spreads had remained the same, the yield ratio and relative yield spread of BBB to AAA bonds could have decreased.

交流电和直流电有何区别？