下列哪项不是伤寒所常见（）
A.持续高热
B.血常规白细胞总数正常
C.相对缓脉
D.皮肤瘀点、瘀斑
E.肥达反应阳性
参考答案：D
The companies are working together to create _____they hope will be the best means of transport in the 21st century.
A．which
B．that
C．what
D．Who
()供应链节点企业只能唯一存在于一条供应链中。
A．正确
B．错误
