某研究组设想以如图所示装置用电化学原理生产硫酸．关于该装置的叙述正确的是（ ）

下列代表一级域名的有( )。

A．ac

B．com

C．jp

D．uk

Tuesday being _________ windy, cold day in Beijing, the President tours _______ Forbidden City in Beijing, wearing ________ blue shirt with no tie and a casual leather jacket.

A．a; the; the

B．a; /; a

C．/; /; a

D．a; the; a

Which of the following nursing interventions would be included in the care of a client with anorexia nervosa as therapy progresses ？（）

A．Let the client eat alone to avoid embarrassment.

B．Weigh the client once a week in the same clothing.

C．Monitor the client for self-destructive tendencies.

D．Praise the client for "looking better" and remind the client that she isn't "too fat. "

清洗方法的特点。

简要回答《联合国国际货物买卖合同公约》风险转移的原则。