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【单选题】
(15) 直流电源一般由电源变压器、整流电路、滤波电路和( )4部分组成。A.
负反馈电路
B.
稳压电路
C.
限流保护电路
D.
串联型调整管
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皮皮学刷刷变学霸
举一反三
【单选题】The customer is still ______ about the functions of the vacuum cleaner in spite of the salesman's repetitive assurance.
A.
vicious
B.
cynical
C.
drastic
D.
skeptical
【单选题】The cause of this kind of flu hasn ’t yet ____ in spite of the efforts of the medical researchers.
A.
have discovered
B.
discovered
C.
been discovered
D.
discover
【单选题】In spite of the efforts to improve housing condition, the number of people living in shanty towns will increase because ______.
A.
houses in shanty towns are cheap
B.
shanty towns could provide people with minimum comfort
C.
no policy will be capable of stopping or changing the present immigrant tendency from the rural areas to the cities in the Third World
D.
the Third World population is growing at a rate of about 80 million people per year
【简答题】In spite of the thunderstorm, the children slept _____all night. A. densely B. soundly C.loudly D. noisily
【简答题】In spite of the personal participation of the President．the conference failed to produce agreement．
【多选题】下列需要备案的重特大案件是（）
A.
非法拆解、回收、拼装机动车案值在10万元以上的案件
B.
侵犯注册商标专用权案值个人在8万元以上、单位在40万元以上的案件，或者侵犯驰名商标的案件
C.
暴力抗法案件
D.
案值达10万元的合同欺诈案件
【简答题】The cause of the accident may never (discover) ______ in spite of the effort of the police.
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