切断刀的特点是主切削刃较窄。

题型:判断题

问题:

切断刀的特点是主切削刃较窄。

考点:数控机床操作工考试数控机床操作工考试题库
题型:判断题

阅读短文,选择正确答案。

    Here are some facts about homes in the United States and the people who live in them. In the early 1990s,

about 50% of the Americans own their homes and the rest rent (租) their homes. The rented homes are usually

apartments (公寓).

    74% of the people in the US make their homes in or around cities. 26% live in the country. Dogs live in about

40% of all homes in the US. About half that number have cats.

    Families in the US are becoming smaller. On the average (平均), 2.64 people lived in a home in early 1990s.

In 1960, the average was 3.5.

    Half of the teenagers in the US have their own bedrooms.

    An American moves, on the average, twelve times in his or her life. In Japan a person moves about five times,

and in England a person moves eight times.

1. According to (根据) the passage, where do most Americans live? [ ]

A. in the countries

B. around the farms

C. in the towns near the sea

D. in or around the cities

2. How many American families own a cat? [ ]

A. 40%

B. 26%

C. 74%

D. 20%

3. Families in the US are ________. [ ]

A. becoming bigger

B. becoming smaller

C. no change

D. not sure

4. Do all the children in the US have their own bedrooms? [ ]

A. Yes, they do.

B. No. Half of them do.

C. No, 5% of the them do.

D. I don't know.

5. The passage is about ________. [ ]

A. people and homes in the United States.

B. dogs and cats in American homes.

C. teenagers' bedrooms.

D. moving house.

题型:判断题

每个人都是社会的一员,社会交往是人类不可缺少的活动。我们在与他人交往的过程中要获得知识、友谊和信任,就必须懂得做人的基本要求。做人的基本要求是( )

A.以礼相待、唯唯诺诺

B.真诚坦率、想说就说

C.不近情理、坚持原则

D.尊重他人、平等待人

题型:判断题

用螺旋测微器测量金属丝的直径,把金属丝放在已校准的螺旋测微器的测砧和测微杆之间,使用微调旋钮将其夹紧,其刻度如图所示,该金属丝的直径为______mm.

题型:判断题

下列各项中,以ATP形式贮存能量的是

A.磷酸烯醇式丙酮酸

B.磷脂酰肌醇

C.肌酸

D.磷酸肌酸

题型:判断题

新中国成立以来,国务院先后公布了三批国家级历史文化名城,其中第二批38座,河南有3座,他们是( )。

A.安阳 南阳 商丘

B.安阳 南阳 郑州

C.郑州 浚县 商丘

D.开封 安阳 郑州

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