压力容器的无损探伤包括()等。
A.射线
B.超声波
C.磁粉
D.渗透探伤
参考答案:A, B, C, D
—My family ____ going to Guangzhou in September this year.
—Do you mean the city ____ held the 16th Asian Games? That’s attractive.
A.is; which
B.are; that
C.is; where
D.are; where
现浇水磨石地面构造上嵌条分块的最主要的作用是()
A. 控制面层厚度
B. 便于施工、维修
C. 以防面层开裂
D. 分块图案美观