加油站的固定工艺管道宜采用无缝钢管，埋地钢管的连接应采用（）。
A、跨接
B、焊接
C、法兰连接
D、丝口连接
参考答案：B
对氯胺酮的描述，下列正确的是（）
A.兴奋延髓和边缘系统
B.直接抑制心肌
C.降低肌张力
D.对颅内压无影响
E.抑制咽喉反射
— There ______ a concert next week.
— Yeah. Exciting news. [ ]
A. are going to be
B. is going to have
C. is going to be
D. are going to have
