婴儿期常见的健康问题包括()
A.厌食
B.营养不良
C.肥胖症
D.缺铁性贫血
E.佝偻病
参考答案:A, B, C, D, E
After riveting is completed, the joints on the shell of a vessel are generally made watertight by().
A.faying
B.caulking
C.felt or canvas packing
D.red lead
前梁与顶梁上部不许空顶,不准出现(),以达“满吃劲”。
A.点接触
B.线接触
C.面接触
D.无要求