【单选题】Which of the following is a beneficial activity of microorganisms?
A.
Some microorganisms are used as food for humans.
B.
Some microorganisms use carbon dioxide.
C.
Some microorganisms provide nitrogen for plant growth.
D.
d.Some microorganisms are used in sewage treatment processes.
【判断题】在外汇市场上,如果投机者预测日元将会贬值,美元将会升值,便会进行卖出美元买进日元的即期外汇交易。( )
【判断题】在外汇市场上,如果投机者预测日元将会贬值,美元将会升值,即进行卖出美元买入日元的即期外汇交易。()
【单选题】广西中医药大学刘力红教授著有一本较有影响力的中医学术著作,请问是下面哪一本?
【判断题】在外汇市场上,如果投机者预测日元将会贬值,美元将会升值,即进行卖出美元买人 日元的即期外汇交易。()
【判断题】( )文明旅游规范只要掌握了专业知识和业务技能就可以了。
【单选题】Which of the following is a beneficial activity of microorganisms?
A.
Some microorganisms are used as food for humans.
B.
Some microorganisms use carbon dioxide.
C.
Some microorganisms provide nitrogen for plant growth.
D.
Some microorganisms are used in sewage treatment processes.
【判断题】在外汇市场上,如果投机者预测日元将会贬值,美元将会升值,即进行买出美元买入日元的即期外汇交易。()