【单选题】【消耗次数:1】
I am not sure whether I can gain any profit from the investment, so I can’t make a(n) ____ tohelp you.
exact
defined
definite
sure
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相关题目
【单选题】 I really appreciate ____ to help me, but I am sure that I can manage by myself.
①  you to offer
②  that you offer
③  your offering
④  that you are offering
【单选题】 — I can’t find my mobile phone. I’m sure it’s in this room. — _______. I’ll call you with my phone. When it rings, you can follow the sound.
①  Excuse me.
②  Good luck
③  Don’t worry
④  ok
【单选题】 21. Am I _____ your way? I can move over a bit and make room for you...
①  under
②  in
③  beyond
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【单选题】 With so much I am not sure if Ill have time for the game.
①  do
②  doing
③  did
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【单选题】 A: Are you ready for the test tomorrow? B: [填空] A: Come on, I am sure you will do well.
①  Why do you ask?
②  No. Im afraid not.
③  Sure, no problem.
④  What about you?
【单选题】 Can I help you with the bag?
①  No, no. I can take it myself
②  Thank you
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【单选题】 I really do not know whether we can succeed, so do not expect ____.
①  too much of us
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【单选题】 Sorry, I can’t find the books you asked for.____________
①  Don’t mention it.
②  It’s your fault.
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④  I won’t forgive you.
【单选题】 16. As I will be away for at least a year, I’d appreciate____ from you now and then so that I can know how everyone is getting along.
①  having heard
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【单选题】 As I will be away for at least a year,Id appreciate________from you now and then so that I can know how everyone is getting along.
①  having heard
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随机题目
【单选题】 若直流他励电动机在电动运行状态中,由于某种因素,使电动机的转速高于理想空载转速,这时电动机便处于( )。
①  回馈制动状态
②  能耗制动状态
③  电枢反接制动状态
【单选题】 当电动机的电枢回路铜损耗比电磁功率或轴机械功率都大时,这时电动机处于:( )
①  能耗制动状态
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【单选题】 在电机的制动中,不能使用回馈制动方法的电机是( )
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②  他励电动机
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【单选题】 从变压器的短路试验可以求出( )。
①  铁损耗
②  额定铜损耗
③  电压比
【单选题】 电枢绕组是由若干绝缘导线构成的线圈组成的,每个线圈按一定的规律焊接到( )上而相连成一个整体
①  电刷
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【单选题】 变压器中最主要的部件指的是铁心和( )。
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②  储油柜
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【单选题】 变压器中,不考虑漏阻抗和饱和的影响,若原边电压不变,铁心不变,而将匝数增加,则励磁电流;
①  增加
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【单选题】 并励直流电动机,当电源反接时,转速方向( )。
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【单选题】 额定电压为 10000V/400V 的三相电力变压器带负载运行时,若二次侧电压为410V, 则负载的性质是( )。
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【单选题】 电枢反应是指( )。
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②  励磁磁场对电枢电动势的影响
③  电枢磁动势对励磁磁场的影响