低温镀铁修复工艺获得的修补层的疲劳强度大致为45钢的疲劳强度的()A.86% B.8

题型:单项选择题

问题:

低温镀铁修复工艺获得的修补层的疲劳强度大致为45钢的疲劳强度的()

A.86%

B.80%

C.75%

D.71%

考点:海洋油气操作工考试海洋油气操作工技师海洋油气操作工技师题库
题型:单项选择题

下列有关碱金属铷(Rb)的叙述中,错误的是(   )

A.灼烧氯化铷时,火焰有特殊颜色

B.硝酸铷是离子化合物,难溶于水

C.在钠、钾、铷三种单质中,铷的熔点最低

D.氢氧化铷是强碱

题型:单项选择题
     Why must we pay taxes? The answer is that the government needs money for many things, for
example, to pay its soldiers, sailors and airmen, to build roads, bridges, offices, schools, etc, and to buy
goods from abroad; and only the people of the country can supply the money.
     One of the most important taxes is income-tax which a person pays according to the amount of his
income, whether he is a merchant, a doctor, a lawyer, a shopkeeper, a miner or anything else. This is
called a "direct" tax, because it is paid in money directly to the government.
     Another tax is paid on goods such as watches, jewelry, new clothes, tobacco wine, etc, when they are
brought into a country. Such a tax is paid as part of the price of these goods if they are late sold in shops.
We call it "indirect" tax, because it is paid indirectly through the shopkeepers.
     People usually complain about having to pay taxes, but they forget that the money is spent on things
that they and their families need. We need policemen to catch thieves, to see that men obey the laws, to
direct traffic, etc, and they must be paid what they earn; children need education and there must be
schools and teachers; we want our streets to be kept clean, and the wages of men who do this kind
of work have to be paid. Above all, the country must always be ready to defend itself against attacking
enemies, and we can not have an army without paying for it. Besides, if a country wants to develop, there
are many other  things to do...
     Taxes, therefore, cannot be avoided. We buy our food and clothes and pay for our amusements; but,
there are several things that the State finds the money for, and that is necessary for us if our society is to
continue. We have no real reason to complain, therefore, when we are asked to supply money to be
spent for the good of ourselves and for our fellow-citizens.                                                                     
                                                                   Title: 1. _____ Tax  
    Governments                         Having many things to do →2. Tax is         
     3. _____4. _____
                  People → Taxes
kinds of taxes Tax-payers 
6.          tax People whose income is over a  certain amount.
7.          tax The shopkeeper.
5. _____                  Taxes → people
On safetyPolicemen and soldiers
8. On _____Teachers and schools
 On service  Officials and workers
9. On _____
    10. _____                    Taxes can not be avoided
题型:单项选择题

非侵入区的宽度应当为两条平行跑道正常运行区之间区域的宽度,并且不得小于()米。

A.1350米

B.610米

C.700米

D.800米

题型:单项选择题

K5 2.0T车型的百公里综合油耗为()L。

A.8.1

B.8.2

C.8.3

D.8.4

题型:单项选择题

合情推理和演绎推理的关系是什么?

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