【单选题】1 customer's securities account has a debit balance of $2,000. His commodity account has a surplus of $2,500. The carrying broker can:
A.
transfer funds from the commodity account to the stock account at the broker's discretion.
B.
not transfer funds without written permission from the customer.
D.
treat the accounts as one account tomeet a margin call.
【多选题】新中国在20世纪50年代的主要外交活动有( )。
【判断题】教师需要先用良好的服务赢得家长的信任,家长才会与教师精诚合作,达到共同教育好孩子的目的。( )