在施工现场测设已知高程的点,常用()来测量。A、高差法 B、双仪器法 C、视线高法

题型:单项选择题

问题:

在施工现场测设已知高程的点,常用()来测量。

A、高差法

B、双仪器法

C、视线高法

D、双面尺法

考点:公路养护工考试高级公路养护技师高级公路养护技师题库
题型:单项选择题

阅读理解.

     Mrs. Brown lives in a small village. Her husband is dead. She has a son but no daughters. His

name is John and he is twenty-five. After John finishes collage (大学), he gets work in a big city,

New York, and he lives there. It's quite a long way from his mother's home, and she is not happy

about it. But John says, "There is no good work for me in this small village, Mother, and I can get

a lot of money in New York. Then I can give much to you."

     One day Mrs. Brown is very angry. She takes a train to her son's house in New York. Then she

says to him. "John, why do you never call me?"

     "But mother," John laughs (笑) and says, "You don't have a telephone with you."

     "No," she says, "I haven't, but you have one."

1. Where does Mrs. Brown live?

A. In a small village

B. In a big city

C. In New York

D. In a town

2. What is Mrs. Brown's son's age?

A. 20

B. 21

C. 25

D. 13

3. How does Mrs. Brown go to New York one day?

A. On foot

B. By bus

C. By bike

D. By train

4. Why does John never call his mother?

A. John doesn't want to do that

B. John has no telephone

C. His mother has no telephone

D. His mother doesn't want to answer

5. Which is right?

A. The village is near New York

B. John works in a big city and his mother likes it

C. In the village there is no good work for John

D. John never gives money to his mother.

题型:单项选择题

烃是               (    )

A、含有C、H元素的有机物             B、含有C元素的化合物

C、仅由C、H两种元素组成的有机物     D、完全燃烧只生成CO2和H2O的化合物

题型:单项选择题

镭是周期表中第7周期第ⅡA族元素,下列关于镭的性质描述中不正确的是 

A.在化合物中呈+2价

B.镭比钙的金属性强

C.氢氧化物呈两性

D.碳酸盐难溶于水

题型:单项选择题

DTRU面板上有()个接收头,如果配置成接收分路,实际接线时只需要用到()个接收头;如果配置成四收分集需要用到()个接收头。

A、4,2,4

B、4,4,4

C、2,2,4

D、2,1,2

题型:单项选择题

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