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【单选题】
停车时,将接入电动机的三相电源线中的任意两相对调,使电动机定子产生一个与转子转动方向相反的旋转磁场,从而获得所需的制动转矩,使转子迅速停止转动。这种称为( )。
A.
能耗制动
B.
反接制动
C.
发电反馈制动
D.
机械制动
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参考答案：
举一反三
【单选题】Please ______ a coat with you whenyou go out.
A.
bring
B.
put
C.
get
D.
take
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【单选题】Whenyou read the headline “Cure That Is Worse Than the Problem” from the Internet,what do you predict to read in the article? Choose a content that bestdescribes your prediction.
A.
A new drug has been discovered but it is far too expensive.
B.
A doctor criticizes the use of medicines in general.
C.
A widely used drug is found to cause more harm than good.
D.
People would face their problems better if they did not take drugs.
查看完整题目与答案
【单选题】对于一个头指针为hea/D的带头结点的单链表,判定该表为空表的条件是( )。
A.
hea/D==NULL
B.
hea/D→next==NULL
C.
hea/D→next==hea/D
D.
hea/D!=NULL
查看完整题目与答案
【简答题】Whenyou__________(接受)apresent,youmustusebothhands.It’satraditionalcustominChina.
查看完整题目与答案
【单选题】甲型肝炎病毒的缩写为()。
A.
HAV
B.
HBV
C.
HCV
D.
HDA
E.
HEA
查看完整题目与答案
【单选题】You'd better take something to read whenyou go to see the doctor ______ you have to wait.
A.
even if
B.
as if
C.
in case
D.
so that
查看完整题目与答案
【简答题】Whenyou read the headline “Cure That Is Worse Than the Problem” from the Internet,what do you predict to read in the article? Choose a content that bestdescribes your prediction.A. Anew drug has been ...
查看完整题目与答案
【单选题】下列不属于发展氘氚聚变核反应堆优点的是_________。
A.
氘、氚聚变能是铀-235裂变能释放的4倍
B.
聚变反应不会产生强放射性的放射性物质
C.
反应堆体积小巧，易于控制
D.
海洋中有取之不尽的氘
查看完整题目与答案
【单选题】下列不属于发展氘氚聚变核反应堆优点的是()
A.
氘、氚聚变能是铀-235裂变能释放的4倍
B.
聚变反应不会产生强放射性的放射性物质
C.
海洋中有取之不尽的氘
D.
反应堆体积小巧，易于控制
查看完整题目与答案
【单选题】回答题 We' ve read how babies stare longer and cry less when held by pretty people， and heard tales of handsome children doing better in school， given special attention by their teachers. In life， as in ...
A.
have less difficult in life
B.
are less worried about love
C.
pay less attention to others
D.
like to gaze at lovely babies
查看完整题目与答案
相关题目：
【单选题】Please ______ a coat with you whenyou go out.
A.
bring
B.
put
C.
get
D.
take
查看完整题目与答案
【单选题】Whenyou read the headline “Cure That Is Worse Than the Problem” from the Internet,what do you predict to read in the article? Choose a content that bestdescribes your prediction.
A.
A new drug has been discovered but it is far too expensive.
B.
A doctor criticizes the use of medicines in general.
C.
A widely used drug is found to cause more harm than good.
D.
People would face their problems better if they did not take drugs.
查看完整题目与答案
【单选题】对于一个头指针为hea/D的带头结点的单链表,判定该表为空表的条件是( )。
A.
hea/D==NULL
B.
hea/D→next==NULL
C.
hea/D→next==hea/D
D.
hea/D!=NULL
查看完整题目与答案
【简答题】Whenyou__________(接受)apresent,youmustusebothhands.It’satraditionalcustominChina.
查看完整题目与答案
【单选题】甲型肝炎病毒的缩写为()。
A.
HAV
B.
HBV
C.
HCV
D.
HDA
E.
HEA
查看完整题目与答案
【单选题】You'd better take something to read whenyou go to see the doctor ______ you have to wait.
A.
even if
B.
as if
C.
in case
D.
so that
查看完整题目与答案
【简答题】Whenyou read the headline “Cure That Is Worse Than the Problem” from the Internet,what do you predict to read in the article? Choose a content that bestdescribes your prediction.A. Anew drug has been ...
查看完整题目与答案
【单选题】下列不属于发展氘氚聚变核反应堆优点的是_________。
A.
氘、氚聚变能是铀-235裂变能释放的4倍
B.
聚变反应不会产生强放射性的放射性物质
C.
反应堆体积小巧，易于控制
D.
海洋中有取之不尽的氘
查看完整题目与答案
【单选题】下列不属于发展氘氚聚变核反应堆优点的是()
A.
氘、氚聚变能是铀-235裂变能释放的4倍
B.
聚变反应不会产生强放射性的放射性物质
C.
海洋中有取之不尽的氘
D.
反应堆体积小巧，易于控制
查看完整题目与答案
【单选题】回答题 We' ve read how babies stare longer and cry less when held by pretty people， and heard tales of handsome children doing better in school， given special attention by their teachers. In life， as in ...
A.
have less difficult in life
B.
are less worried about love
C.
pay less attention to others
D.
like to gaze at lovely babies
查看完整题目与答案
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