更多“关于期间的规定下列说法正确的是（）”相关的问题
对少年儿童，切除腭扁桃体应慎重，是因为（）。
A.影响咽腔共鸣
B.易发生软腭瘢痕
C.腭扁桃体是重要免疫器官
D.易引起咽干，咽后壁淋巴组织增生成团
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亚甲基蓝分光光度法测定水中硫化物时，样品采集很关键，由于硫离子很容易被氧化，硫化氢易从水中逸出，因此在采集时应加入适量（）溶液和乙酸锌-乙酸钠溶液，使水样呈碱性并形成硫化锌沉淀。
A . A．氢氧化钠
B . B．氯化钠
C . C．碳酸钠
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城市语音DT测试掉话率优秀值（），基准值（）
A . 0.5%，1%
B . 0.05%，0.1%
C . 0.01%，0.05%
D . 0.1%，0.5%
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我国标准规定,渐开线标准直齿圆柱齿轮分度圆上的压力角应为( )度。
A . 200 B . 300 C . 600 D . 900
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如果采用分层抽样，从个体数为N的总体中抽取一个容量为n样本，那么每个个体被抽到的可能性为（）。
\tA.1/N
\tB.1/n
\tC.n/N
\tD.N/n
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阅读以下说明，回答问题1-4。现有这样一个关系，用来表示某工厂工人家庭的信息。记录每个工人的工作证号、姓名和家庭住址，还包含他/她的每个孩子的身份证号、姓名和年龄，以及他／她所拥有的每部电话的电话号码...请将该关系模式分解成第二范式的关系模式，确定主关系键。
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超声波从一种介质进入另一种不同介质而改变传播方向的现象叫做（）
A.折射
B.扩散
C.角度调整
D.反射
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Rise in Number of Cancer SurvivorsCancer is the second leading cause of death in the United States, after heart disease. In the 1 , it was often considered a death sentence. But many patients now live longer 2 of improvements in discovery and treatment.Researchers say death 3 in the United States from all cancers combined have fallen for thirty years. Survival rates have increased for most of the top fifteen cancers in both men and women, and for cancers in 4 .The National Cancer Institute and the Centers for Disease Control and Prevention studied the number of cancer survivors. A cancer survivor is defined 5 anyone who has been found to have cancer. This would include current patients.The study covered the period 6 1971 to 2001. The researchers found there are three 7 as many cancer survivors today as there were thirty years ago. In 1971, the United States had about three-million cancer 8 . Today there are about ten-million.The study also found that 64% of adults with cancer can expect to still be 9 in five years. Thirty years ago, the five-year survival rate was 50%. The government wants to 10 the five-year survival rate to 70% by 2010.The risk of cancer increases with age. The report says the majority of survivors are 65 years and 11 .But it says medical improvements have also helped children with cancer live 12 longer. Researchers say 80% of children with cancer will survive at least five years after the discovery. About 75% will survive at 13 ten years.In the 1970s, the five-year survival rate for children was about 50%. In the 1960s, most children did not survive cancer. Researchers say they 14 more improvements in cancer treatment in the future. In fact, they say traditional cancer-prevention programs are not enough anymore. They say public health programs should also aim to support the 15 numbers of cancer survivors and their families.
A．dueB．becauseC．despiteD．regardless
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适当拉开员工之间的薪酬差距体现了（ ）原则。\t
A．对外具有竞争力
B．对内具有公正性
C．对员工具有激励性
D．吸引人才
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患者，男性，60岁，以间歇性无痛性全程肉眼血尿2周来院就诊，经B超及膀胱镜检查证实，膀胱右侧壁有一个直径2.5cm大小的占位病变，收入院诊治。预防复发应采用（）。
A.全身化疗 B.放疗 C.口服卡介苗 D.生物学治疗 E.膀胱灌注化疗药或卡介苗
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供方入场后（）内，需完成绿化养护责任公示牌的更新或新设，相关原则根据附件1《绿化养护责任公示牌相关标准及应用要求》。
A.1周
B.2周
C.1月
D.2月
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采集血气分析标本时，错误的操作是
A．使用2ml无菌干燥注射器B．抽取经过稀释的肝素溶液，充盈注射器后弃去C．无菌操作下抽取动脉血1mlD．将血迅速注入无菌室管内并用软木塞塞住E．立即送检
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所得税有以下特征（）。
A.税负相对公平，合乎量能原则 B.所得税为直接税，税负不易转嫁。一般不存在重复征税问题 C.课税有弹性，能较好地处理国民经济发展、税源增长与税收的关系 D.有利于维护国家经济利益
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预应力筋锚固后的外露部分宜采用（）。外露长度应符合设计要求；当设计无规定时，后张法预应力筋外露长度不宜小于预应力筋直径的（）倍，且不宜小于（）mm。
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