(判断题)9: 低压电器是指直流额定电压1200V以下。 A: 错误 B: 正确 ...

(判断题)3: 返回系统等于1时，继电器动作状态不能确定，无法工作。 A: 错误 B: 正确 ...

(单选题)19: 32. The southern part of the United States has become familiar ______ people around the world through such movies as "Gone With The Wind". A: to B: with C: by D: on ...

(单选题)13: 86. I can not give you _______ for the type of car you sell because there is no demand for it in the market. A: an expense B: a charge C: a purchase D: an order ...

(单选题)1: 12. I can hardly believe that she bought the beautiful dress ______ only 50 yuan. A: in B: for C: over D: above ...

(单选题)17: 2. ______ the uncertainty of the weather, outdoor cafes are not a feature of English life. A: In spite of B: Owing to C: Belonging to D: Without ...

(单选题)5: 61. A strike began late in September in protest against a ______ of wages. A: limit B: raise C: increase D: reduction ...

(单选题)15: 78. Nylon fibers last longer and are stronger than natural fibers _______ silk or cotton. A: such as B: as regards C: as well as D: as such ...

(单选题)9: 43. They said that they wouldn't mind ______. A: to have a little light music B: having a little light music C: have a little light music D: if they have a little light music ...

(单选题)11: We won’t talk business _______ we have dinner. I never talk business at meals. A: though B: when   C: so that D: where ...