计算题：在开关电源系统中，某路负载所用的采样分流器的规格为75mv/500A，用万用表测得此分流器两端电压为6mV，则此路负载电流是多大？

[问答题]Some people think that financial disparity affects friendship. What do you think? The following article is discussing this issue. Read it carefully and write your response in about 300 words, in which you should:　　1. summarize briefly the main opinion of the article;　　2. give your comment.　　Marks will be awarded for content relevance, content sufficiency, organization and language quality. Failure to follow the above instructions may result in a loss of marks.　　When people with money are friends with people of modest means the disparities don’t typically end with the bank accounts. One person in the friendship often feels less comfortable than the other, and it tends to be the one with less money—the friend who can’t afford to join the group at the restaurant or go on the weekend trip, the one whose share may be paid for by the others.　　“It doesn’t disturb the rich ones to pay,” says Horst Heidbrink, a psychology lecturer at the distance learning University of Hagen. “The rich person thinks they’re being caring. But the poorer person feels under pressure to be particularly nice.” But a lack of balance puts pressure on many friendships. Aristotelian ethics would suggest dealing with the imbalance with increased devotion by the friend with less. Friendship expert Horst Heidbrink says he wouldn’t recommend this, but his research has shown him that the give and take between friends has to be balanced.　　Friendships between rich and poor people are not as unusual as one might think. In a 2014 study by the Bremen-based Allensbach Institute, 1,624 people of different ages were asked about their friendships. Forty-four percent of respondents said they had friends who were considerably better off than they were. And 41% said they were friends with people who were considerably less well off than they were. And yet that old saying to the effect that money issues can put an end to friendship still holds for many.　　According to the study, friends helped each other out with moving house and renovation work, offered an ear when needed and doled out advice. But only 10% ever accepted significant loans from their richer friends. “Many people believe that borrowing money would weigh the friendship down,” Heidbrink says. “Most people would rather go to their parents because family relationships don’t depend on symmetry as much as friendships do.” Nevertheless, he says, “A good friendship can also withstand a credit.”　　Although friendships between men and women are vulnerable because they are defined by different activities. With their male friends, men play sports, for example, while women and their girlfriends often just talk when they get together. “That’s where it gets harder to leave out financial situations, and there’s more comparing,” says Heidbrink. On the other hand, when two guys play soccer together, it’s not an issue if one returns to a villa and the other to a low-rent apartment.　　“What counts is trust,” Heidbrink says. When trust isn’t justified—when a friend refuses to help or betrays confidences—then friendships fall apart. They don’t fall apart because one person has a lot of money in the bank and the other doesn’t. If the less well-off don’t suffer from jealousy or envy, and the better-off don’t take it too much to heart if their best friend can’t join them on that spa trip, there’s a good chance of a successful friendship.

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