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【单选题】
Sally purchased a log-splitter five years ago. This year, she purchases some new parts, gasoline, oil, and spends 2 hours repairing the log-splitter. Which of the following is included in this year’s GDP?
A.
the amount she paid to buy the new parts
B.
the amount she paid to buy new parts and gasoline
C.
the amount she paid to buy new parts, gasoline, and oil.
D.
the amount she paid to buy new parts, gasoline, oil, and the market value of the 2 hours spent to repair the log-splitter.
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举一反三
【简答题】编写程序,获得用户输入的数值M和N,求M和N的最大公约数。提示代码如下。def (a,b): if a > b: a,b = b,a r = 1 while r != 0: r=a%b a = b b = r return am = eval(input(""))n = eval(input(""))print(_____________)
【多选题】迷迭香酸具有抗氧化、延缓衰老、减肥降脂等功效,它的结构简式为: ,以邻苯二酚为原料合成迷迭香酸的路线为: 下列说法正确的是               (   )
A.
有机物B中含有1个手性碳原子
B.
有机物A分子中所有原子一定在同一平面上
C.
有机物C在稀硫酸催化下水解的一种产物是B
D.
1mol B与足量的NaOH溶液反应,最多可消耗3mol NaOH
【单选题】Within hours after birth,a baby whose mother is diabetic had a rising respiratory rate and labored breathing.The baby became cyanotic and died.Postmortem histological examination revealed collapsed al...
A.
Congenital emphysema
B.
Respiratory distress syndrome
C.
Cystic fibrosis
D.
Tracheoesophageal fistula
【单选题】The family of a detainee shall be ________ within 24 hours after detention
A.
noted
B.
summoned
C.
notified
D.
called
【单选题】A patient with nausea, vomiting, and diarrhea within 5 hours after eating most likely has
A.
shigellosis.
B.
cholera.
C.
E. coli gastroenteritis.
D.
salmonellosis.
E.
staphylococcal food poisoning.
【简答题】辗转相除法 求两个的最大公约数 (a,b) 算法思路 s1: 将两整数求余 a%b = x s2: 如果x = 0;则b为最大公约数 s3: 如果x != 0,则 a = b;b = x;继续从s1开始执行 流程图 例析 例如,求(319,377) 首先(319,377)与(377,319)的最大公约数相同;即:(319,377) == (377,319) s1: ...
【简答题】迷迭香酸(F)的结构简式为: 它是存在于许多植物中的一种多酚,具有抗氧化、延缓衰老、减肥降脂等功效,以A为原料合成F的路线如下(已知苯环上的羟基很难直接与羧酸发生酯化反应): 根据题意回答下列问题: (1)A的结构简式为 ;反应②的反应类型是 。 (2)反应③的试剂为 。 (3)1molF分别与足量的溴水和NaOH溶液反应,最多可消耗Br 2 mol, NaOH mol。 (4)E在一定条件下发生...
【单选题】The occurrence of neonatal jaundice within 24 hours after birth should be considered first.
A.
physiological yellow
B.
neonatal septicemia
C.
neonatal hepatitis
D.
neonatal hemolysis
E.
congenital biliary atresia(先天性胆道闭锁)
【单选题】Within hours after birth,a baby whose mother is diabetic had a rising respiratory rate and labored breathing.The baby became cyanotic and died.Postmortem histological examination revealed collapsed al...
A.
Congenital emphysema
B.
Respiratory distress syndrome
C.
Tracheoesophageal fistula
D.
Pulmonary carcinoma
【判断题】气温是霉菌生长的关键因素
A.
正确
B.
错误
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