我国现行税法规定，对进口应税产品不征收资源税，相应地对出口应税产品也不免征或退还已纳资源税。( )
参考答案：对
__________ his knowledge of the mountainous country, John Smith was appointed as our guide. [ ]
A. In spite of
B. Due to
C. Instead of
D. Regardless of
往复泵注油器的油位要求是在（）的位置。
A、1/4～2/4
B、1/4～3/4
C、1/3～2/3
D、1/2～2/3
