在一个圆柱形的容器内，装有0.30mol氮气、0.10mol氧气和0.10mol氦气，当混合气体的总压力为100kPa时，氦的分压为

单项选择题某些转述动词后可接that 从句，也可接名词，有些通常只能接其中一种。例如：argue that ...; argue the case a point the merits of ...; note that ...; note the difference the importance an increase; suggest that ...; suggest an approach a link a need; maintain that...; summarzie the results the findings the data 判断下列句中转述动词的正确用法，选出最佳答案补足句子。Prosecutors（检察官）maintained _____ A、that the contract was valid and legally binding B、a marked increase in the frequency of outbreaks. C、the findings from studies from several different countries. D、the case for interpreting books in their historical context. E、a complex link between climate and ecosystem response.

单项选择题托森差速器是利用蜗轮蜗杆传动副的高内摩擦力矩Mr进行转矩分配的。（ ）