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【单选题】
平面连杆机构中最常见的是()。A.
三杆机构
B.
两杆机构
C.
对称机构
D.
四杆机构
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反馈参考答案：
举一反三
【单选题】Every morning he _________ newspapers from house to house. [ ]
A.
gets out
B.
sets up
C.
gives out
D.
puts off
【单选题】What has made it difficult to survey lions in remote parts of Sudan and Ethiopia?
A.
The lack of clues about the species .
B.
Inadequate funding for research .
C.
Endless fighting in the region .
D.
The hazards from the desert .
【单选题】There has been ____ accidents on this part of road.
A.
a number of
B.
a great deal of
C.
a series of
D.
plenty of
【单选题】A great deal has been done to remedy, the situation.（ ）
A.
maintain
B.
improve
C.
preserve
D.
protect
【单选题】What accusation has Ethiopia’s main opposition coalition made?
A.
It accused the EPRDF of claiming victory before all votes were counted.
B.
It accused the Coalition for Unity and Democracy of trying to cling to power.
C.
It accused the ruling party of rigging the result of the election.
D.
It accused the Coalition for Unity and Democracy of voting irregularities.
【单选题】根据《旅游法》第 61 条规定,旅行社应当根据旅游活动特点,提示参加团队旅游的旅游者按照规定投保()险。
A.
警告旅游救助
B.
提醒旅客意外伤害
C.
人身意外伤害
D.
劝说旅行社责任
【单选题】Any car that would ____ these young customers has to have three main features, great style, strong performance and a low price.
A.
attend to
B.
contribute to
C.
appeal to
D.
add to
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