()位于焊缝内部,需用无损探伤或用破坏性试验才能发现,如未焊透、内部气孔、内部裂纹及

题型:单项选择题

问题:

()位于焊缝内部,需用无损探伤或用破坏性试验才能发现,如未焊透、内部气孔、内部裂纹及夹渣等。

A、外部缺陷

B、内部缺陷

C、咬边

D、弧坑

考点:闸门运行工考试闸门运行技师闸门运行技师题库
题型:单项选择题

阅读理解。

     The Spring Festival is Chinese New Year's Day. It usually comes in February. Everyone in China likes the

Spring Festival very much. When the Spring Festival comes, people must clean their houses and go to the shop

to buy lots of things,such as sweets,fruits,meat and new clothes. On New Year's Eve (除夕), the family

members sit together to watch TV and make dumplings. The next day, people wear new clothes and say

"Happy New Year!" to each other. They eat dumplings and delicious food. Now, more and more foreigners

like the Spring Festival.

1. The Spring Festival usually comes ________.

A. in February

B. in January

C. in December

2. When the Spring Festival comes, ________.

A. people will eat delicious food and clean their houses

B. people will go to the shop to buy sweets,fruits,meat and new clothes

C. all of the above

3. On New Year's Eve,all the family members often ________.

A. watch TV and make dumplings together

B. say "Happy New Year!" to each other

C. both A and B

题型:单项选择题

有以下程序
main ( )
int x[8] =8,7,6,5, 0, 0,*s;
s=x+3;
printf (" %d\n" ,s[2] );

执行后输出结果是

A.随机值

B.0

C.5

D.6

题型:单项选择题

某施工企业与建设单位采用固定总价方式签订了写字楼项目的施工总承包合同,若合同履行过程中材料价格上涨导致成本增加,这属于施工风险中的()。

A.经济与管理

B.组织

C.技术

D.工程环境

题型:单项选择题

合同能源项目的不确定性分析,重点关注节能量预测的不确定性和未来()的不确定性两个方面。

A.投资规模

B.投资结构

C.投资回报

D.投资方向

题型:单项选择题

目前的数据压缩研究主要集中于()的压缩方面。

A.图像和视频信号

B.图像和语音信号

C.视频信号和语音信号

D.语音信号和文字

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