皮皮学,免费搜题
登录
搜题
【单选题】
Eating healthily costs about $1.50 more per person daily, according to the most thorough review yet of the affordability of a healthy diet. 'For many low-income families, an【C1】______$1.50 daily is quite a lot,' says Mayuree Rao, 'It【C2】______to about $550 more per year per person, and that could be a real【C3】______to healthy eating.' Rao and her colleagues reached their【C4】______after analysing 27 studies from 10 high-income countries, comparing price【C5】______for healthy versus unhealthy ingredients and diets.【C6】______one study compared the cost of a diet rich in fruit and vegetables versus one that was【C7】______in them. Another compared prices of【C8】______healthy and less healthy items, such as wholegrain versus white bread. Individual items were【C9】______matched in price. Meats【C10】______the largest difference: healthier options cost an average of 29 cents per serving more than unhealthy options. 【C11】______this, comparisons of whole diets showed that healthier diets cost averagely $1.48 more per day. This shows that comparisons based on single ingredients dont tell the full【C12】______. 'It tells us that,【C13】______, it doesnt cost more to eat healthier based on one nutrient,' says Rao. 'But theres growing evidence that the【C14】______of foods in your diet【C15】______your disease risk more than any single nutrient, so we think our【C16】______finding that healthier diets cost about $1.50 more has the most public health【C17】______.' As to why healthier food has become more【C18】______Rao says that it may be because the food industry organizes itself and the types of food it produces to【C19】______its own economies of scale,【C20】______than whats best for consumers. 【C1】
A.
available
B.
adequate
C.
extra
D.
economical
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
【多选题】CR部操作保有客户营销优势?
A.
有效衔接销售与售后
B.
与客户联系的渠道较多
C.
亲和力好
D.
数据获取有一定障碍
【简答题】将十进制数255和256转换为二进制数。
【单选题】Excel工作簿与工作表的关系是 。
A.
一个工作簿由若干张工作表组成
B.
一个工作表由若干张工作簿组成
C.
工作簿和工作表是同一概念
D.
工作簿和工作表之间不存在隶属关系
【单选题】Excel工作簿与工作表的关系是()。
A.
一个工作簿由若干个工作表组成
B.
一个工作表由若干个工作簿组成
C.
工作簿与工作表是同一个概念
D.
工作表与工作簿之间不存在隶属的关系
【单选题】十进制数256转换为二进制数为?
A.
1 0000 0000
B.
1 0000 0110
C.
0 0110 0110
D.
1 0000 0001
E.
1 1111 0000
【单选题】有一台发电机300MW,通过容量为360MVA额定电压242/20kV升压变,二回220kV2×LGJ-400/100km与系统连接,正常运行时变压器中性点直接接地。在做规划设计阶段,潮流计算哪些参数()?
A.
发电机的Xd,发电机出力,变压器正、负序电抗(X1、X2),线路正序零序阻抗分别为(R1+jX1)和(R0+jX0),负荷(P+jQ)。
B.
发电机出力,变压器正序电抗(X1),线路正序阻抗(R1+jX1),负荷(P+iQ)。
C.
发电机出力,变压器正序零序阻抗(X1、X0),线路正序零序阻抗(R1+jX1)和(R0+jX0),负荷[]。
D.
发电机的同步电抗Xd:发电机出力,变压器正序电抗(X1),线路正序阻抗(R1+jX1),负荷(P+jQ)。
【简答题】十进制数256转换成二进制数为________________。
【单选题】十进制数256转换为二进制数为()
A.
10000
B.
1000100
C.
100000000
D.
100101000
【单选题】一台同步发电机的正序电抗、负序电抗、零序电抗的大小关系为( )。
A.
正序电抗
B.
正序电抗>负序电抗>零序电抗
C.
正序电抗=负序电抗=零序电抗
D.
正序电抗=负序电抗>零序电抗
【多选题】CR部操作保有客户营销优势?
A.
有效衔接销售与售后
B.
与客户联系的渠道较多
C.
亲和力好
D.
数据获取有一定障碍
相关题目: