对于自动变速器的手动换挡阀,正确的说法是 For the manual shift valve of the automatic transmission, the correct statement is A. 由选换挡杆带动手动换挡阀 Manual shift valve driven by optional shift lever B. 手动换挡阀独立存在,不在阀体中 Manual shift valve is independent of valve body C. 手动换挡阀由加速踏板连动 The manual shift valve is operated by the accelerator pedal D. 手动换挡阀直接控制前进挡的挡位 Manual shift valve directly controls the forward gear