下列物质中不能使血管平滑肌舒张的是()
A.缓激肽
B.血栓素
C.局部代谢产物
D.前列环素
E.组胺
参考答案:B
影响测验信度的因素有哪些?它们是怎样影响测验信度的?
The manager gave one of the salesgirls an accusing look for her ______ attitude toward ______ customers.
A. straightforward B. partial C. favourable D. hostile