下列哪项不属于溶血性贫血的特征（）。

[单选题]新中国成立之初那些遮住花布棉袄的外衣颜色大多为（），少数是褐、黑。

[单选题]SOLAS74公约规定，应急电源对每一登乘救生艇筏的集合地点，登乘地点和舷外的应急照明供电时间，对货船至少（）小时，对客船至少（）小时。

[单选题]假设商业银行当年将100个客户的信用等级评为BB级，第二年观察这组客户，发现有3个客户违约，则其（）为3%。

[单选题]请阅读 Passage 1，完成第21~25小题 。Passage 1As regards social conventions，we must say a word about the well-known English class system. This is an embarrassing subject for English people，and one they tend to be ashamed of ，though during the present century class-consciousness has grown less and less，and the class system less rigid.But it still exists below the surface.Broadly speaking，it means there are two classes，the "middle class" and the"working class". (We shallignore for a moment the old "upper class"，including the hereditary aristocracy，since it is extremely small in numbers; but some of its members have the right to sit in the House of Lords，and some newspapers take surprising interest in their private life.) The middle class consists chiefly of well-to-do businessmen and prof essional people of all kinds.The working class consists chiefly of manual and unskilled workers.The most obvious difference between them is in their accent.Middle-class people use slightly varying kinds of "received pronunciation" which is the kind of English spoken by BBC announcers and taught to overseas pupils.Typical working-class people speak in many different local accents which are generally felt to be rather ugly and uneducated.One of the biggest barriers of social equality in England is the two-class education system.To have been to a so-called "public school" immediately marks you out as one of the middle class.The middle classes tend to live a more formal life than working-class people，and are usually more cultured.Their midday meal is"lunch" and they have a rather formal evening meal called"dinner"，whereas the working man's dinner，if his working hours permit，is at midday，and his smaller，late-evening meal is called supper.As we have said，however，the class system is much less rigid than it was，and for a long time it has been government policy to reduce class distinctions.Working-class students very commonly receive a university education and enter the professions，and working-class incomes have grown so much recently that the distinctions between the two classes are becoming less and less clear. However，regardless of one's social status，certain standards of politeness are expected of everybody，and a well-bred person is polite to everyone he meets，and treats a laborer with the same respect he gives an important businessman.Servility inspires both embarrassment and dislike.Even the word "sir"，except in school and in certain occupations (e.g.commerce，the army，etc.) sounds too servile to be commonly used.The most obvious difference between the working class and the middle class in English is their ____.

[单选题]Unix文件的存取有三种权限r，w，x，其中，x表示（）

[单选题]外照射防护的基本方法为（　　）。

[单选题]男，42岁，搬运工，间歇性腰部疼痛2年，腰痛于冬、春季加重，常在休息保暖及服吲哚美辛后缓解，最近1周腰痛加剧，以致不能弯腰，步行困难，体查脊柱无明显畸形，各椎体无压痛，弯腰45°时左下肢牵扯性疼痛，腰椎X线片未见异常。该患者的病史哪项应补充询问（）

[多选题]海洋生态评价包括（）。

[多选题]患儿女，7个月，因上腹部膨大3个月，并间有不规则发热入院。体查：T39.3℃，浅表淋巴结不肿大，咽部充血，扁桃体不肿大，双肺呼吸音粗糙，心脏无异常，腹部膨隆，无肌紧张，肝肋下6cm，边钝，质中等；脾肋下约5cm，质中等，两者均超过脐水平线，表面光滑。外周血象检查：Hb80g/L，WBC10.8×109/L，N0.64、L0.36，ALT45U/L，AST26U/L，ALP14U/L，总蛋白57g/L，白蛋白32g/L，球蛋白25g/L。BUN7.0mmol/L，空腹血糖5.3mmol/L，蛋白质电泳：白蛋白63.3%，α1-球蛋白5.2%，α2-球蛋白6.3%，β-球蛋白10%，γ-球蛋白15.2%。对尼曼-匹克细胞，叙述正确的是（）

[配伍题]听神经瘤造成（　）|垂体腺瘤造成（　）|颅咽管瘤造成（　）|脑膜瘤造成（　）