【单选题】Why was Sarah's mother unfriendly to the old man at first?
A.
she didn't like the way he looked
B.
he was not polite to her
C.
she didn't trust strangers
【单选题】( )是指合同当事人一方为了证明合同的成立和担保合同的履行,在合同约定应给付的款额内,向对方预先给付一定数额的货币。
【单选题】按所用胶凝材料的不同划分,建筑砂浆不包括( )。
【多选题】根据我国有关规定,可以为发行债券提供担保的担保人应具备的条件有
【单选题】对于降压变压器而言,有如下关系成立( )。