解下列方程组:2x-y=25x-2y=3

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问题:

解下列方程组:
2x-y=2
5x-2y=3
考点:二元一次方程组的解法
题型:解答题



If you find you spend more than you make, there are only two things to do: decrease your spending or (1) . It’s often easiest to decrease expenditures, because your expenses tend to be more (2) . There are as many ways to (3) as there are people looking to save it. For example, you may pool your resources with friends, or (4) only during sales, or even live more simply. But (5) that saving money should not necessarily be an end in itself. Don’t (6) of ways to save a dime, and don’t get upset about situations where (7) to spend money. The goal is to bring your budget into balance, not to become a tightwad who keeps (8) of every penny and feels that spending money is a (9) . It is important to remember that budgets may be (10) not only by decreasing expenditures, but also by increasing income. (11) to increase income is to get a (12) if you don’t already have one.
Many students work during college. Although working adds to the (13) you will face, it does not mean that your grades will necessarily suffer. In fact, many students who work (14) than those who don’t work, because those with jobs need to be (15) . Considering part-time work is often a better (16) for dealing with budget shortfalls, than taking out a loan. Because student loans are (17) , it’s easy to use them as a crutch. Loans can be of help (18) or if you couldn’t afford to attend a college without them. If you do (19) , remind yourself: one day soon you’ll have to (20) with interest.

题型:解答题
两个同学踩着滑板,互相推一下,结果体重小的同学退开的距离远,以下说法正确的是(  )

A.体重大的同学给体重小的同学的力大

B.两个同学给对方的力一样大

C.只有体重大的同学给了体重小的同学力

D.两个同学给对方的力不一样大

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试述胸外电击除颤的注意事项。

题型:解答题

男性,54岁。外伤致胫腓骨中下1/3开放性骨折,经治疗3个月后,X线片复查见胫骨骨折略有移位、骨折线清晰。你认为影响骨折愈合的最主要原因是()

A.年龄较大

B.骨折段血液供血不足

C.伤口有感染

D.周围软组织挫伤严重

E.骨折复位不良

题型:解答题

生后数年内可自行消退的血管瘤属于()。

A.蔓状血管瘤

B.杨梅状血管瘤

C.葡萄酒色斑

D.静脉曲张

E.海绵状血管畸形

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