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【单选题】
分电器( )的作用是当发动机的转速发生变化时,会自动调整点火提前 角。A.
电脑
B.
A/D转换器
C.
传感器
D.
执行器
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Offers and revocations are effective upon posting, but acceptances are effective upon receipt.
A.
正确
B.
错误
【单选题】对于移相控制电路，为了限制最小移相控制角和设置移相范围，可在输入控制信号的输入控制信号的输入端再叠加一个（）。
A.
交流电压
B.
偏移电压
C.
同步信号
D.
触发信号
【单选题】How do debaters select their positions?
A.
The positions are decided by the head judge
B.
The positions are selected by the debaters in turn
C.
The positions are given to debate teams at random
D.
The positions are arranged according to the ranking in previous debates
【单选题】He __ a good football player . [ ]
A.
want to be
B.
wants be
C.
wants to be
D.
wants to
【单选题】How do debaters select their positions?
A.
the positions are decided by the head judge.
B.
the positions are selected by the debaters in turn.
C.
the positions are given to debate teams at random.
D.
the positions are arranged according to the ranking in previous debates.
【单选题】Which of the following is true of effective hoping?
A.
Effective hoping is hoping without a plan, leading to nowhere.
B.
People should set long-term goals in effective hoping first.
C.
Effective hoping involves goal-setting, planning and executing.
D.
Effective hoping is so powerful that it can determine success.
【单选题】Oppenheimer wants to show people the painting of van Gogh which isexample to show his _____interests.
A.
focus
B.
focused
C.
unfocuse
D.
unfocused
【单选题】My mother _________ an artist. [ ]
A.
wants is
B.
want to be
C.
wants be
D.
wants to be
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