决定一国适度外汇储备水平的因素包括（ ）。

企业在考虑是否放弃供货商提供的现金折扣政策时，若在折扣期内将应付账款用于短期投资，所得的投资收益率高于放弃折扣...

判断题企业在考虑是否放弃供货商提供的现金折扣政策时，若在折扣期内将应付账款用于短期投资，所得的投资收益率高于放弃折扣的成本，则应享受折扣。( )

实验表明EBT应用于配位滴定中的最适宜的酸度是（ ）。A、pH11D、pH=7-11

单项选择题实验表明EBT应用于配位滴定中的最适宜的酸度是（ ）。A、pH<6.3B、pH=9-10.5C、pH>11D、pH=7-11

People receive a huge number of emails which are presen...

问答题People receive a huge number of emails which are present in the mailboxes every day. To get your email noticed among them, it is important to give your email a ______ that grabs the attention of the receiver.
A、letter-head
B、subject line
C、message
D、closing part