第19题: [单项选择]舵效是指（） A. 运动中船舶，操一定舵角后，船在较短时间，较小水域内所取得转头角的大小 B. 停止中船舶，操一定舵角后，船在较短时间，较小水域内所取得转头角的大小 C. 旋转中船舶，操一定舵角后，船在较短时间，较小水域内所取得转头角的大小 D. 后退中船舶，操一定舵角后，船在较短时间，较小水域内所取得转头角的大小 参考答案:A
第26题: [单项选择]She often thinks that her six years in Italy were wasted, ________she________ that time learning more Italian.
A. but that; might have taken B. for that; should have found C. in that; could have spent D. with that; would have used 参考答案:C
