低合金管道的焊接方法,常采用手工电弧焊、钎焊、气焊。
参考答案:错
下列各句均有错,请你找出后,在题前括号内填入选项并在横线上改正。
( ) 1. We like sitting under the tree and talk to each other. ________
A B C D
( ) 2. Millie, is this yours book? Yes, it is. ________
( ) 3. What do you go to school every day? By bus. ________
( ) 4. We don't have a art lesson today? ________
( ) 5. How many balls are they behind the door? ________
“大建设”中管理定位是公司电网建设管理工作分为建设职能管理、工程项目建设过程管理和()管理。
A、安全质量
B、参建队伍
C、总体验收
D、生产技术