依照我国《婚姻法》的规定,子女不履行赡养义务时,()的父母,有要求子女付给赡养费的权利。
A.年老
B.无劳动能力
C.生活困难
D.患病
参考答案:B, C
—1t's hot today. How about going swimming after school?
—_________! Let's ask Daniel to go with us.[ ]
A.That's OK
B. Best wishes
C. Good luck
D. Good idea
如果管子在试压时有破裂,放压后可用锥度为()的金属柱塞堵住或直接更换管子。
A、0.5°~1°
B、1°~2°
C、2°~3°
D、3°~5°