国家计划明确的宏观调控目标和总体要求是制定财政政策和货币政策的（）
A、唯一指导
B、主要依据
C、总体方向
D、重要参考
参考答案：B
关于绞窄性肠梗阻的临床表现，下列哪项是错误的：
A．持续性剧烈腹痛
B．呕吐频繁
C．有腹膜刺激征
D．腹胀对称
E．肠音减弱或消失
The risk to the exporter in open account trading is that by surrendering the shipping documents to the importer, he（）before he has obtained payment for them.
A．is in control of the goods
B．loses control of the goods
C．retains control of the goods
D．gives up control of the goods
