合格境外机构投资者在境内从事证券投资开立()纳入专用存款账户管理。
A.人民币过渡账户
B.人民币特殊账户
C.人民币保证金账户
D.人民币结算资金账户
参考答案:B, D
He waited ________ the volcano became quiet and he was able to return two days later.
A.when
B.before
C.as
D.until
油浸式消弧线圈检修时,对于穿缆式套管,排油至油面低于套管安装法兰水平位置()以下;对于导杆式套管,可根据现场需要排油至手孔以下或排尽。
A.300mm
B.200mm
C.100mm
D.150mm