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【判断题】
将已知准确浓度的标准溶液滴加到待测溶液中,直至所加溶液的物质的量与待测溶液的物质的量按化学计量关系恰好反应完全,达到化学计量点;再根据标准溶液的浓度和所消耗的体积,计算出待测物质含量的分析方法叫滴定分析。()
A.
正确
B.
错误
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参考答案:
举一反三
【简答题】The attitude of the lenders in emerging markets towards multinational firms can be described by the word ______.
【多选题】which of the following statement describ wholesalers?
A.
selling goods for resale
B.
selling goods in small quantities
C.
dealing in a limited range of goods
D.
more capital required
【单选题】Of the following, which is most likely attributable to the effect of endorphins as described in the passage?
A.
After an injection of novocaine, a patient has no feeling in the area where the injection was given.
B.
After taking ibuprofen, a person with a headache gets quick relief.
C.
After receiving a local anesthetic, an injured person reports relief in the anesthetized area.
D.
After being given aspirin, a child with a badly scraped elbow feels better.
E.
After acupuncture, a patient with chronic back pain reports that the pain is much less severe.
【简答题】People who plan their career years in advance and make efforts to make them happen achieve far more than those who do not have a long-term plan and make their career decisions dictated only by immedia...
【单选题】在光电效应中, 光电子的最大初动能与入射光的
A.
频率成反比关系
B.
强度成反比关系
C.
频率成线性关系
D.
强度成线性关系
【单选题】The main purpose of the passage is to ______.
A.
predict the future of medical care
B.
describe a health checkup device
C.
show the superior health care system of Sweden
D.
warn about the dangers of undetected diseases
【单选题】Which of the following is a formal invitation that requests a formal response that describes the method of work and associated compensation.
A.
Request for quotation (RFQ)
B.
Request for proposal (RFP)
C.
Request for bids (RFB)
D.
Invitation for bids (IFB)
E.
Letter of intent (LOI)
【单选题】It’s better to plan well ahead of time if you want the birthday party arrangements to be really __________.
A.
effective
B.
efficient
C.
deficient
D.
sufficient
【单选题】当发现有人触电,必须用最快的方法( )
A.
进行人工呼吸
B.
进行胸外心脏按压
C.
使触电者脱离电源
D.
拨打120
【简答题】简述体育课程与教学论的学科概况及其发展历史。
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