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【简答题】
东风11型内燃机车上采用了哪几类接触器？有何功用和特点？
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】The manager has anticipated the situation that we ______ a certain amount of resistance to our plan.
A.
meet
B.
will meet
C.
met
D.
have met
【单选题】The manager has to impove the working conditions in the company.
A.
accepted
B.
allowed
C.
agreed
D.
permitted
【单选题】The manager has _____ to improve the working conditions in the company. [ ]
A.
accepted
B.
allowed
C.
permitted
D.
agreed
【单选题】题目: 下列关于脊髓前角α运动神经元的描述,正确的是 编号: CHJAAQQM
A.
是躯体运动骨骼肌运动反射的最后公路
B.
轴突末梢释放的递质是谷氨酸
C.
活动随γ运动神经元活动增强而减弱
D.
支配梭内肌纤维使其收缩
E.
对骨骼肌的梭内肌和梭外肌纤维都有支配
【单选题】The company where I work is not as good as before, so the manager has decided to fire some employees to ________ the expenses of his company. [ ]
A.
cut off
B.
cut away
C.
cut up
D.
cut down
【简答题】说明感应加热淬火的特点及其应用。
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