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【单选题】
The country of Growpaw does not trade with any other country. Its GDP is $20 billion. Its government purchases $3 billion worth of goods and services each year, collects $6 billion in taxes, and provides $2 billion in transfer payments to households. Private saving in Growpaw is $4 billion. What is investment in Growpaw?A.
$5 billion
B.
$4 billion
C.
$3 billion
D.
$2 billion
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【单选题】【会计概述•单选题】下列选项中,在借贷记账法下关于成本类账户结构描述不正确的是( )。
A.
借方登记增加
B.
贷方登记增加
C.
期末余额一般在借方
D.
有些账户可能无余额
【单选题】If a student has a problem with classroom work，he or she should______.
A.
make an appointment with the professor a week before
B.
approach a professor after class
C.
seek the professor's help in his office
D.
go to the professor's apartment
【简答题】After a student has done with secondary school courses, he should be interested enough in a subject to enjoy gaining knowledge _______its own sake.
【单选题】关于热原叙述正确的是（ ）。
A.
热原一种微生物
B.
热原致热活性中心是脂多糖
C.
热原能在灭菌过程中完全破坏
D.
普通滤器能截留热原
E.
蒸馏法制备注射用水除热原是依据热原的水溶件
【简答题】简述热原的定义、组成及性质。
【单选题】关于热原的叙述中错误的是
A.
热原的组成是蛋白质、磷脂和脂多糖。致热力最强的脂多糖
B.
热原能被强碱破坏
C.
输液产品必须检查热原
D.
热原能被强酸破坏
E.
热原的耐热性很差
【简答题】简述热原的组成、性质、除去方法以及检查方法。
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