【单选题】下面是关于毛细血管的叙述,正确的是 1它是人体内数量最大、分布最广的血管 2它的管壁仅由一层上皮细胞构成 3它是实现血液与组织细胞间物质交换的重要结构 4它是连通最小动脉和静脉的血管
【单选题】Foreign trade can be conducted on the following terms except for______.
B.
documentary collection
【单选题】股东与管理层的冲突能够通过哪种方式解决()
【单选题】双压阀是( )的派生阀,具有一定的逻辑特性,也被称为“与”阀,属于气压传动系统中的逻辑控制元件。
【单选题】下列说法中,不属于毛细血管特点的是( )
【单选题】Which of the following statements is correct for an open economy with a trade surplus?
A.
The trade surplus cannot last for very many years.
B.
The trade surplus must be offset by negative net capital outflow.
C.
The trade surplus implies that the country's national saving is greater than domestic investment.
D.
None of the choices is correct.
【单选题】Public trade fairs are open to ( ).
A.
company representatives only