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【单选题】
进行变压器耐压试验时，试验电压升到要求数值后，应保持（ ），无放电或击穿现象为试验合格。A.
30s
B.
60s
C.
90s
D.
120s
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【单选题】Who will be most probably interested in Discovery?
A.
Parents who want to send their children to a school of medicine.
B.
Children who are good at mathematics.
C.
Parents who want their children to become another Albert Einstein.
D.
Children who are interested in playing chess.
【多选题】68为保证结构的整体性,混凝土应连续浇筑,要求每一处的混凝土在初凝前就被后部分混凝土覆盖并捣实成整体,根据结构特点不同,可分为( )等浇筑方案。
A.
垂直分层；
B.
全面分层；
C.
分段分层：
D.
斜面分层；
【多选题】为保证结构的整体性,混凝土应连续浇筑,要求每一处的混凝土在初凝前就被后部分混凝土覆盖并捣实成整体,根据结构特点不同,可分为( )等浇筑方案。
A.
垂直分层；
B.
全面分层；
C.
分段分层：
D.
斜面分层；
【单选题】Who will be most probably interested in Discovery?
A.
Parents who want to send their children to a school of medicine.
B.
Children who are good at mathematics.
C.
Parents who want their child to become another Albert Einstein.
D.
Children who are interested in playing chess.
【简答题】what were the moral principles that parents in the early 19th century wanted their children to live by?
【单选题】As is known to all，it is teachers and parents who will have a big _____ on the development of children. [ ]
A.
change
B.
affection
C.
influence
D.
impression
【单选题】It can be inferred from the first paragraph that parents of gap students may
A.
help children to be prepared for disasters
B.
receive all kinds of support from their children
C.
have rich experience in bringing up their offspring
D.
experience watching children grow up
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