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【判断题】
一个支承点只能限制工件一个自由度，但如果六个支承点分布不当，就可能限制不了工件的六个自由度。A.
正确
B.
错误
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皮皮学刷刷变学霸
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【单选题】---Have you finished reading Gone With the Wind? ---No, I_________ my homework all day yesterday.
A.
was doing
B.
would do
C.
had done
D.
do
【单选题】I ___________ in the street when I met an old friend of mine yesterday.
A.
walked
B.
was walking
C.
has walked
D.
had walked
【单选题】The inner connection for the entire area _____when there was a sudden power cut yesterday.
A.
lost
B.
was lost
C.
had lost
D.
had been lost
【简答题】如何理解科学、技术的涵义？
【单选题】对因私出国并在国外长期定居的党员,出国学习研究超过5年仍未返回的党员,一般予以( )。 对与党组织失去联系6个月以上、通过各种方式查找仍然没有取得联系的党员,予以( )。 停止党籍2年后确实无法取得联系的,按照自行脱党予以( )。
A.
停止党籍 除名 停止党籍
B.
除名 停止党籍 除名
C.
停止党籍 停止党籍 停止党籍
D.
停止党籍 停止党籍 除名
【单选题】It __________ sunny today, but it __________ cloudy yesterday. [ ]
A.
is, is
B.
was, was
C.
is, was
D.
was, is
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