皮皮学，免费搜题
登录
搜题
【单选题】
在UNIX linux系统中,记录当前登录的每个用户的日志文件是
A.
lastlog
B.
btmp
C.
wtmp
D.
utmp
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
.
..
皮皮学刷刷变学霸
举一反三
【判断题】邻二氮杂菲分光光度法测定微量铁实验中,如果试液吸光度不在吸收曲线的线性范围内,就无法测定试液浓度。
A.
正确
B.
错误
查看完整题目与答案
【单选题】分光光度法中，对溶剂的要求在220～240nm范围内吸收度不得超过（）。
A.
0.1
B.
0.20
C.
0.3
D.
0.40
E.
0.4
查看完整题目与答案
【单选题】在紫外-可见分光光度法中,透光率的绝对误差为 =0.5%时,要想使浓度相对误差 c/c比较小,吸光度应在什么范围内?
A.
0.1 ～ 1.0
B.
0.2 ～ 0.7
C.
0.7 ～ 2.0
D.
1.0 ～ 2.0
查看完整题目与答案
【单选题】自动生化分析仪中连续检测法的读数方式为
A.
在一定的时间范围内连续读取各吸光度值
B.
反应尚未开始和反应终点时各读取吸光度值
C.
终点附近读2个检测点取均值
D.
在终点附近读取两点，计算两点吸光度值的差值
E.
每经过比色窗口即读取1个吸光度
查看完整题目与答案
【判断题】浙江属于典型的温带海洋性气候
A.
正确
B.
错误
查看完整题目与答案
【单选题】Many different meanings have been given to the word poetry. It would weary my readers if I were to discuss which of these definitions ought to be selected I prefer telling them at once that which I ha...
A.
He doesn' t want his readers to be confused.
B.
He wants to get to his point and not discuss definitions.
C.
Many people have tried to define it, and he wanted to add another by giving his point of view.
D.
He doesn' t think the other definitions are accurate.
查看完整题目与答案
【判断题】分光光度法实验中,如果试液吸光度不在吸收曲线的线性范围内,就无法测定试液浓度。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Directions: Choose the one that best completes the sentence, or fully expresses the meaning of the given word. The word ( ) is used to refer to things that do not happen in daylight.
A.
opaque
B.
inherent
C.
nocturnal
D.
tenuous
查看完整题目与答案
【单选题】Choose the word or phrase that is closest in meaning to the underlined part. A second major step would be to develop design specifications that consider the functionality of the human with the same de...
A.
develop design procedures to account for the human behavior and activities
B.
promote design arrangements and take the human factors into consideration
C.
make used of design steps that respect the human functionality
D.
draft and effect design requirements that take into account the human functionality
查看完整题目与答案
【简答题】自动生化分析仪中连续检测法的读数方式为A.在一定的时间范围内连续读取各吸光度值 B.反应尚未开始和反应终点时各读取吸光度值 C.终点附近读2个检测点取均值 D.在终点附近读取两点，计算两点吸光度值的差值 E.每经过比色窗口即读取1个吸光度 自动生化分析仪一点终点法的读数方式为A.在一定的时间范围内连续读取各吸光度值 B.反应尚未开始和反应终点时各读取吸光度值 C.终点附近读2个检测点取均值 D.在...
查看完整题目与答案
相关题目：
【判断题】邻二氮杂菲分光光度法测定微量铁实验中,如果试液吸光度不在吸收曲线的线性范围内,就无法测定试液浓度。
A.
正确
B.
错误
查看完整题目与答案
【单选题】分光光度法中，对溶剂的要求在220～240nm范围内吸收度不得超过（）。
A.
0.1
B.
0.20
C.
0.3
D.
0.40
E.
0.4
查看完整题目与答案
【单选题】在紫外-可见分光光度法中,透光率的绝对误差为 =0.5%时,要想使浓度相对误差 c/c比较小,吸光度应在什么范围内?
A.
0.1 ～ 1.0
B.
0.2 ～ 0.7
C.
0.7 ～ 2.0
D.
1.0 ～ 2.0
查看完整题目与答案
【单选题】自动生化分析仪中连续检测法的读数方式为
A.
在一定的时间范围内连续读取各吸光度值
B.
反应尚未开始和反应终点时各读取吸光度值
C.
终点附近读2个检测点取均值
D.
在终点附近读取两点，计算两点吸光度值的差值
E.
每经过比色窗口即读取1个吸光度
查看完整题目与答案
【判断题】浙江属于典型的温带海洋性气候
A.
正确
B.
错误
查看完整题目与答案
【单选题】Many different meanings have been given to the word poetry. It would weary my readers if I were to discuss which of these definitions ought to be selected I prefer telling them at once that which I ha...
A.
He doesn' t want his readers to be confused.
B.
He wants to get to his point and not discuss definitions.
C.
Many people have tried to define it, and he wanted to add another by giving his point of view.
D.
He doesn' t think the other definitions are accurate.
查看完整题目与答案
【判断题】分光光度法实验中,如果试液吸光度不在吸收曲线的线性范围内,就无法测定试液浓度。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Directions: Choose the one that best completes the sentence, or fully expresses the meaning of the given word. The word ( ) is used to refer to things that do not happen in daylight.
A.
opaque
B.
inherent
C.
nocturnal
D.
tenuous
查看完整题目与答案
【单选题】Choose the word or phrase that is closest in meaning to the underlined part. A second major step would be to develop design specifications that consider the functionality of the human with the same de...
A.
develop design procedures to account for the human behavior and activities
B.
promote design arrangements and take the human factors into consideration
C.
make used of design steps that respect the human functionality
D.
draft and effect design requirements that take into account the human functionality
查看完整题目与答案
【简答题】自动生化分析仪中连续检测法的读数方式为A.在一定的时间范围内连续读取各吸光度值 B.反应尚未开始和反应终点时各读取吸光度值 C.终点附近读2个检测点取均值 D.在终点附近读取两点，计算两点吸光度值的差值 E.每经过比色窗口即读取1个吸光度 自动生化分析仪一点终点法的读数方式为A.在一定的时间范围内连续读取各吸光度值 B.反应尚未开始和反应终点时各读取吸光度值 C.终点附近读2个检测点取均值 D.在...
查看完整题目与答案