设计合同生效后,设计人要求终止或解除合同,设计人应( )。
A.退还定金
B.退还定金并赔偿发包人损失
C.双倍返还定金
D.支付设计费的2%的违约金
参考答案:C
I really think you can’t judge a man by his _____________; it is very unfair.
A.cover
B.face
C.appearance
D.head
对管道对接等焊口进行无损探伤时,非操作人员,严禁进入探测禁区。