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【判断题】
晶闸管导通的条件是晶闸管加正向电压即阳极接正极,阴极接负极,同时门极加正向电压。( )A.
正确
B.
错误
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【简答题】A good (instruct) _______ will show you how to use the machine.
【单选题】Trust is a tricky business. On the one hand, it's a necessary condition 1 many worthwhile things: child care, friendships, etc. On the other hand, putting your 2, in the wrong place often carries a hi...
A.
In contrast
B.
As a result
C.
On the whole
D.
For instance
【单选题】Trust is a tricky business. On the one hand, it's a necessary condition 1 many worthwhile things: child care, friendships, etc. On the other hand, putting your 2, in the wrong place often carries a hi...
A.
consult
B.
compete
C.
connect
D.
compare
【简答题】工程竣工验收后10日内，应向委托部门报送建设工程质量监督报告。
【单选题】It is so good a habit to instruct children to lay things _______ they belong when they are young.
A.
to which
B.
that
C.
in which
D.
where
【单选题】Life in London has so many________-nightclubs，good restaurants and so on. [ ]
A.
collections
B.
instructions
C.
attractions
D.
expressions
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