下列哪一项为标示物质分子热运动剧烈程度之单位名称（）
A.温度计
B.温标
C.分子量
D.温度
参考答案：D
____ it comes to traffic rules, I often come across such cases _____ the local drivers obviously know
them but won't follow them. [ ]
A. If; why
B. As; which
C. Once; as
D. When; where
会计凭证按照编制的程序和用途不同可分为原始凭证和记账凭证。( )
