问题
单项选择题
当SMYD作（）测试时，必须有液压系统B压力。
A.当前故障
B.故障历史
C.伺服
D.其它功能
答案
参考答案：C
搜题请搜索小程序“爱下问搜题”
当SMYD作（）测试时，必须有液压系统B压力。
A.当前故障
B.故障历史
C.伺服
D.其它功能
参考答案：C
选词填空：根据对话内容，用方框中所给单词的适当形式填空，每词限用一次。
Tony: What is 小题1: about? Bill: Scientists have discovered 小题2: on Mars. Tony: Really? That’s very fantastic. Have they discovered life on Mars? Bill: Well, they’re looking 小题3: life but they haven’t found anything yet. Tony: I know there’s 小题4: life on the moon. Bill: Yes, that’s right. So far there’s only life on 小题5: . Tony: Are we alone with so many stars in the universe? Bill: I am interested in it, so I want to be a scientist when I grow up. Tony: I wish you will. |