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【单选题】
测量了两段距离,其结果分别为:136.46m±0.015m;960.76m±0.025m。则:
A.
第一段精度高
B.
两段直线精度相同
C.
第二段精度高
D.
无法判断
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【单选题】Westgard多规则质控方法的主要特点,以下哪项除外
A.
在Levey-Jennings方法基础上发展起来的
B.
只能对多个批号质控值进行评价
C.
具有低的假失控或假报警概率
D.
通过单值质控图进行简单的数据分析和显示
【单选题】Westgard多规则质控方法(12s/13s/22s/R4s/41s/10`x,N=2)与12s;质控规则(N=2)相比较,其特杰主要在于
A.
降低了误差检出能力
B.
降低了假失控率
C.
保证检测结果的准确度
D.
保证检测结果的精确度
E.
保证检测结果的灵敏度
【简答题】Westgard多规则质控方法包括了哪些基本规则?
【单选题】下面是关于计算机内存储器的一些叙述: 1 内存储器由DRAM芯片或NAND内存芯片组成 2 CPU 可按字节地址随机存储内存储器的内容 3 目前市场上销售的PC其内存容量多数;已达1GB以上 4 台式PC内存储容量一般可以扩充,手机内存容量一般不可扩充 其中正确的是
A.
仅 ① 和 ③
B.
仅 ①、 ② 和 ③
C.
仅 ① 和 ④
D.
仅 ②、 ③ 和 ④
【单选题】下面是关于PC机内存储器的一些叙述() ① 内存储器每次只能读写1个字节(8位) ② 内存储器是由半导体存储器芯片组成的  ③ 目前市场上销售的PC机,其内存容量多数已达512MB以上  ④ PC机的内存容量一般是可以扩充的  其中正确的是()
A.
①和③
B.
②、③和①
C.
①和④
D.
②、③和④
【单选题】下列哪项不是 Westgard多规则质控方法的特点
A.
1s是警告规则,并启动 Westgard多规则误差检查程序
B.
1s是失控信号,提示存在较大的随机误差
C.
2s为失控信号,主要对系统误差敏感
D.
41s主要对系统误差敏感
E.
R和10主要对随机误差敏感
【单选题】Based on this lecture, what can we infer about the future of marine mammals?
A.
Dolphins and whales will adapt to environmental changes.
B.
Marine traffic and underwater testing may cause their extinction.
C.
People will be able to communicate directly with this species.
D.
Marine animals will be used for military and commercial purposes.
【单选题】What can we learn about the Mayan calendar?
A.
It was based on the European calendars.
B.
It was better than European calendars.
C.
It was as accurate as European calendars.
D.
It was copied by European calendars.
【单选题】What do we learn about Mayhew’s previous report?
A.
It was based on his colleagues’hypothesis about global warmin9.
B.
It was contrary to what his team found in the recent study.
C.
It was a complete reversal from his 2008 study about marine invertebrates.
D.
It found evidence for the connections between biodiversity and temperature.
【单选题】Based on the laser operation treatment of three patients。what can we infer from the passage?
A.
Laser light treatment is safe and effective.
B.
Laser light treatment is dangerous and ineffective
C.
Laser light treatment still requires much more studies.
D.
Government should encourage doctors to do research of laser light treatment on the human body.
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