《苏尔维格之歌》是著名诗剧（）中女主人公在茅屋前纺纱时演唱的一首歌。 ["《培尔·金特》","《抒情乐曲》","《蝴蝶》","《乡愁》"]
These last few painful moments make me wonder if what my friends told me about college was all true. ①Where are all the beautiful girls I’m supposed to be meeting and talking to in every room? Where are the freedom and relaxed atmosphere my friends bragged about? I’m supposed to be enjoying myself instead of suffering! Everybody seems to have forgotten that college is hard work too. My first days in writing class prove② that delight and pleasure often disappear when assignments are due!
文中②段画线部分正确的翻译是（）。 ["快乐和愉悦常常在该交作业的时候消逝得无影无踪。","快乐和愉悦常常在有作业的时候消逝得无影无踪。","快乐和愉悦常常在作业来临的时候消逝得无影无踪。"]
滑油指示系统包括有（）。 ①滑油低压开关； ②滑油温度传感器； ③磁性堵塞（金属屑探测器） ④滑油压力传感器 ["①②③④","①②③","②③④","①③④"]
缅甸国内民族众多，下列选项中哪些是缅甸的主要民族（）。 ["掸族","缅族","孟族","克伦族","钦族"]
下列选项中，属于钢琴协奏曲作品的是（） ["《梁祝》","《春江花月夜》","《黄河》","《长江随想曲》"]
为何要对带式焙烧机炉罩内各段压力进行合理控制？
