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GB/T47477—2026纳米技术宽温域纳米颗粒测量考试试卷(含答案)

GB/T47477—2026纳米技术宽温域纳米颗粒测量考试试卷(含答案)

GB/T47477—2026纳米技术宽温域纳米颗粒测量考试试卷(含答案)

考试说明:本试卷满分100分,严格依据《GB/T47477—2026 纳米技术 宽温域纳米颗粒测量 凝结核粒子计数法》原文命题,题型包含单项选择题、多项选择题、判断题。试卷侧重设备精密参数、测量流程细节、仪器精度标准、不确定度计算、设备安装规范等高难度易混淆考点,所有答案均可在标准原文中精准溯源。

一、单项选择题(共15题,每题3分,共45分)

每题仅有一个正确答案,多选、错选、不选均不得分

1、GB/T47477—2026规定,凝结核粒子计数法适用的样气温度宽温域范围为()

A、0℃~200℃ B、-10℃~300℃ C、-20℃~300℃ D、0℃~300℃

2、本标准规定的可测量纳米及亚微米颗粒粒径范围为()

A、1nm~1000nm B、10nm~1000nm C、1nm~500nm D、10nm~500nm

3、WTCPC对30nm电迁移直径颗粒的计数效率最低要求为()

A、50% B、80% C、90% D、100%

4、WTCPC单颗粒计数模式下,仪器响应时间最大限值为()

A、3s B、4s C、5s D、6s

5、WTCPC数据采样速率最低要求为()

A、0.5Hz B、1.0Hz C、1.5Hz D、2.0Hz

6、测量仪器安置的环境相对湿度要求为()

A、≤70% B、≤75% C、≤80% D、≤85%

7、样气采集与气相管路渗漏检查中,渗漏流量需小于()

A、0.2L/min B、0.4L/min C、0.5L/min D、1.0L/min

8、输运部分清洁度和渗漏检查中,30s内平均颗粒物数量浓度应小于()

A、2.0个/mL B、5.0个/mL C、10个/mL D、20个/mL

9、采样流量在0.3L/min~3L/min范围内,允许的相对误差范围为()

A、±5% B、±8% C、±10% D、±15%

10、单次颗粒计数测量时间最低要求为()

A、30s B、60s C、90s D、120s

11、测量后样气采集部分反冲洗的最短持续时间为()

A、3min B、5min C、8min D、10min

12、采样及高温输运管路的标准恒温控制温度为()

A、150℃±15℃ B、160℃±15℃ C、170℃±10℃ D、180℃±10℃

13、旋风分离器标准工作加热温度为()

A、50℃±15℃ B、60℃±15℃ C、70℃±10℃ D、80℃±10℃

14、旋风分离器在25L/min样本流速下,最大允许压力降为()

A、1kPa B、2kPa C、3kPa D、4kPa

15、相对扩展不确定度计算公式中,包含因子k的取值为()

A、1 B、2 C、3 D、4

二、多项选择题(共10题,每题4分,共40分)

每题有两个及以上正确答案,少选、多选、错选均不得分

1、宽温域凝结核粒子计数器(WTCPC)的可选进气流量为()

A、0.3L/min B、1.0L/min C、1.5L/min D、2.0L/min

2、二氧化碳分析仪的核心性能指标要求包含()

A、1h稳定性优于满量程±2%或浓度±0.0001(取大值) B、分辨力优于满量程±0.5%或浓度±0.0001(取大值) C、1h零点漂移小于满量程±1%或浓度±0.0001(取大值) D、测量区间覆盖0%~10%(vol%)

3、WTCPC单颗粒计数模式下的技术要求包含()

A、测量浓度范围0个/cm³~50000个/cm³ B、对50nm颗粒计数效率≥100% C、最小采样时间30s D、优先使用测光模式提升精度

4、测量前WTCPC仪器合格判定标准包含()

A、开机预热后1min内背景颗粒波动误差<10% B、接入高效过滤器后数值可降为0并稳定 C、仪器面板非零跳动率≤5次/min D、单次跳动数值不超过20个/mL

5、采样、输运管路的材质及尺寸要求包含()

A、管路内径4.0mm~8.5mm B、采样管路总长≤1m C、高温输运管路总长≤10m D、弯折半径不小于管路内径10倍

6、分流器1的设计与工作技术要求有()

A、不锈钢材质,本体温度≥145℃ B、可将样本分为三个流路 C、分流角不超过35° D、内壁无前向台肩,出口内径无突变

7、标准规定的测量不确定度来源包含()

A、采样管损失引入的不确定度 B、采样流量引入的不确定度 C、计数器计数效率引入的不确定度 D、测量重复性引入的不确定度

8、旋风分离器的合格性能参数包括()

A、切割粒径D50=1.0μm±0.1μm B、锐度(D16/D84)0.5≤1.25 C、压力降≤2kPa D、进出口内径差异<15%

9、测量实施过程中的规范要求有()

A、采样流量误差测量不少于3次 B、每间隔不超过1h核查分析仪零点漂移 C、单次计数时间不低于60s D、测量次数不少于3次,取平均值为结果

10、完整的测量报告必须包含的内容有()

A、报告编号、样品及送检信息 B、测试环境与仪器参数 C、测量样气温度、颗粒数量浓度平均值 D、分粒径级颗粒数量浓度数据

三、判断题(共5题,每题3分,共15分)

正确选√,错误选×

1、WTCPC对15nm电迁移直径颗粒的计数效率要求大于或等于50%。()

2、采样流量校准相对误差超出±10%时,数据修正后可正常使用。()

3、测量过程中,气体分析仪零点漂移单次超过满量程2%,需重新开展测试。()

4、分流器2工作加热温度标准为50℃±15℃。()

5、高效空气过滤器对0.3μm颗粒的过滤效率需大于99.97%。()

四、参考答案(原文精准溯源)

(一)单项选择题答案

1、B 【原文1范围】本标准适用测量宽温域为-10℃~300℃

2、A 【原文1范围】适用粒径范围1nm~1000nm纳米及亚微米颗粒

3、C 【原文5.2.1e】WTCPC对30nm电迁移直径颗粒计数效率≥90%

4、B 【原文5.2.1c】仪器响应时间≤4s

5、B 【原文5.2.1f】数据采样速率≥1.0Hz

6、C 【原文6环境条件】仪器安置环境相对湿度≤80%

7、B 【原文7.1.3】样气管路渗漏流量应小于0.4L/min

8、A 【原文7.1.5】30s内平均颗粒物数量浓度小于2.0个/mL

9、C 【原文7.2.1】采样流量相对误差控制在±10%之内

10、B 【原文7.2.2】单次计数时间不应小于60s

11、B 【原文7.3.2】样气采集部分反冲洗时间至少5min

12、B 【原文A.1、A.2】采样及高温输运管路恒温160℃±15℃

13、B 【原文A.2.3】旋风分离器加热温度60℃±15℃

14、B 【原文A.2.3】旋风分离器压力降≤2kPa

15、B 【原文8.5公式7】相对扩展不确定度计算k取值为2

(二)多项选择题答案

1、AC 【原文5.2.1g】WTCPC样气进气流量可选0.3L/min、1.5L/min

2、ABCD 【原文5.2.2】完整规定二氧化碳分析仪稳定性、分辨力、零点漂移、测量区间四项指标

3、ABC 【原文5.2.1】标准要求单一颗粒计数模式,禁止使用测光模式,D错误

4、ABCD 【原文7.1.2.1】明确WTCPC预热稳定、过滤归零、跳动率及跳动数值全部合格标准

5、ABCD 【原文A.1、A.2】完整规定管路内径、长度、弯折半径、材质要求

6、ABCD 【原文A.2.1】全覆盖分流器1材质、温度、流路、分流角、结构几何要求

7、ABCD 【原文8.1-8.4】不确定度包含采样管损失、采样流量、计数效率、测量重复性四大来源

8、ABCD 【原文A.2.3】明确旋风分离器切割粒径、锐度、压力降、进出口内径差异要求

9、ABCD 【原文7.2.1、7.2.2】全覆盖采样流量校准、零点核查、计数时长、测量次数规范

10、ABCD 【原文9测量报告】标准明确报告需包含基础信息、测试条件、各类测量数据

(三)判断题答案

1、√ 【原文5.2.1e】对15nm电迁移直径颗粒的计数效率大于或等于50%

2、× 【原文7.2.1】采样流量相对误差必须控制在±10%之内,无修正后使用的相关规定

3、√ 【原文7.2.2】零点漂移单次超满量程2%,需重新开展测试

4、× 【原文A.2.4】分流器2加热温度为60℃±15℃,非50℃±15℃

5、√ 【原文A.2.5】高效空气过滤器对0.3μm颗粒过滤效率>99.97%

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  1. CONNECT:[ UseTime:0.000987s ] mysql:host=127.0.0.1;port=3306;dbname=wenku;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001370s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.022107s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.006478s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001411s ]
  6. SELECT * FROM `set` [ RunTime:0.005254s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001453s ]
  8. SELECT * FROM `article` WHERE `id` = 937551 LIMIT 1 [ RunTime:0.007859s ]
  9. UPDATE `article` SET `lasttime` = 1786817929 WHERE `id` = 937551 [ RunTime:0.034593s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000921s ]
  11. SELECT * FROM `article` WHERE `id` < 937551 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.003830s ]
  12. SELECT * FROM `article` WHERE `id` > 937551 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.011814s ]
  13. SELECT * FROM `article` WHERE `id` < 937551 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.002211s ]
  14. SELECT * FROM `article` WHERE `id` < 937551 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.121523s ]
  15. SELECT * FROM `article` WHERE `id` < 937551 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.012759s ]
0.427335s