网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
单选题
The purpose of the ashing step in graphite-furnace atomic-absorption spec-troscopy is to（）
A
Vaporize metal atoms to be analyzed
B
Cause the metal species to form carbides which are more volatile
C
Convert the graphite furnace to ash to avoid carbide formation
D
Burn off organic species that would interfere with the elemental analysis
参考答案
参考解析
解析：
暂无解析
更多 “单选题The purpose of the ashing step in graphite-furnace atomic-absorption spec-troscopy is to（）A Vaporize metal atoms to be analyzedB Cause the metal species to form carbides which are more volatileC Convert the graphite furnace to ash to avoid carbide formationD Burn off organic species that would interfere with the elemental analysis” 相关考题
考题
3 Organisations need to recruit new employees. An important step in the process is the selection interview.Required:(a) Explain the purpose of the selection interview. (4 marks)
考题
Which of the following is implied in the passage?A．A very important purpose of bank-supervision is to provide adequate capital for their operation.B．A very important purpose of bank-supervision is to ensure banks to operate with adequate capital.C．A very important purpose of bank-supervision is to put additional restrictions on the banks' operations.D．A very important purpose of bank-supervision is to concentrate on risks.
考题
The Buck(降压式变换器) is a ( ) converter.
A.voltage step-upB.current step-downC.current step-upD.resistance
考题
The purpose of the systems analysis phase is to build a logical model of the new system.The first step is（71），where you investigate business processes and document what the new system must do to satisfy users. This step continues the investigation that began during the（72）. You use the fact-finding results to build business models，data and process models，and object models. The deliverable for the systems analysis phase is the（73），which describes management and user requirements，costs and benefits，and outlines alternative development strategies.The purpose of the systems design phase is to create a physical model that will satisfy all documented requirements for the system. During the systems design phase，you need to determine the（74），which programmers will use to transform the logical design into program modules and code. The deliverable for this phase is the（75），which is presented to management and users for review and approval.A.system charter
B.system scope definition
C.system blueprint
D.system requirements document
考题
The purpose of the systems analysis phase is to build a logical model of the new system.The first step is（71），where you investigate business processes and document what the new system must do to satisfy users. This step continues the investigation that began during the（72）. You use the fact-finding results to build business models，data and process models，and object models. The deliverable for the systems analysis phase is the（73），which describes management and user requirements，costs and benefits，and outlines alternative development strategies.The purpose of the systems design phase is to create a physical model that will satisfy all documented requirements for the system. During the systems design phase，you need to determine the（74），which programmers will use to transform the logical design into program modules and code. The deliverable for this phase is the（75），which is presented to management and users for review and approval.A.systems planning phase
B.systems modeling phase
C.systems analysis phase
D.systems design phase
考题
In Hammer’s five-step model, the purpose of “elicitation” is to provide the teacher with feed back as to what to do next.（）A对B错
考题
What is the primary purpose of SMB Smart Designs？ （）A、 assists in locating appropriate resourcesB、 provides training on products， tools， and solutionsC、 provides a direct support path for any partner issueD、 provides validated commercial solutionsE、 provides a step-by-step outline of implementation tasks required
考题
One of the main advantages of a graphite-furnace atomizer is that（）A、It requires only very small quantities of a sampleB、It requires metal.ions in aqueous solutionC、It does not produce background emission like a flameD、It does not get hot like a flame
考题
In Hammer’s five-step model, the purpose of “elicitation” is to provide the teacher with feed back as to what to do next.（）
考题
下列（）为通用橡胶。A、vulcanized rubberB、general purpose rubberC、special purpose rubberD、speciality rubber
考题
With everything arranged properly, the project is surely to （） smoothly as planned, step by step.A、improveB、increaseC、progressD、occur
考题
列关于接入试探数NUM_STEP描述正确的是（）。A、此参数设置每个接入试探序列中允许的接入试探个数，允许的接入试探个数为16。B、本参数设置越大，一个接入探测序列成功接入的概率加大，但有可能相应的增加了反向链路的干扰，因为接入不成功也有可能是因为碰撞造成的。C、通常在PWR_STEP和NUM_STEP两个参数之间存在一个平衡考虑，当PWR_STEP设置得较小，则NUM_STEP应该相应的设置较大一些，反之，PWR_STEP设置较大，则NUM_STEP可以设得小一些。D、通常在PWR_STEP和NUM_STEP两个参数之间存在一个平衡考虑，当PWR_STEP设置得较小，则NUM_STEP也应该相应的设置较小一些，反之，PWR_STEP设置较大，则NUM_STEP可以设得大一些。
考题
which of the following is not true about the classification of the cantainers？（）A、containers are classified as general purpose (dry cargo) container and specific purpose containerB、general purpose container (GP) is suitable for the widest varieties of cargoC、specific purpose container is suitable for the specific cargoD、bulk container， reefer container， open-top container are all general purpose containers
考题
单选题One of the main advantages of a graphite-furnace atomizer is that（）A
It requires only very small quantities of a sampleB
It requires metal.ions in aqueous solutionC
It does not produce background emission like a flameD
It does not get hot like a flame
考题
单选题The first paragraph implies that ______.A
there is a conflict between laws and public opinions on the purpose of education.B
the moral purpose of education varies in form with the social situation.C
Greeks and the medieval Church had the same moral purpose in education.D
the moral purpose of education is to advocate religious beliefs.
考题
单选题What is the primary purpose of SMB Smart Designs？ （）A
assists in locating appropriate resourcesB
provides training on products， tools， and solutionsC
provides a direct support path for any partner issueD
provides validated commercial solutionsE
provides a step-by-step outline of implementation tasks required
考题
判断题In Hammer’s five-step model, the purpose of “elicitation” is to provide the teacher with feed back as to what to do next.（）A
对B
错
考题
单选题If the Call Redirect step sends a caller to a device that does not exist in the CallManager, which branch of the step is executed? （）A
Busy B
Invalid C
Successful D
Unsuccessfu
考题
单选题The master got permission to pump out 500 tons of clean sea water for （）.A
the purpose of trimmingB
the approval for ballastC
the purpose of voyageD
the approval for operation
热门标签
最新试卷