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【单选题】
在多层焊或多层多道焊时,若在层间焊接清理不干净或不当时,则焊缝容易产生( )。A.
气孔
B.
夹渣
C.
咬边
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皮皮学刷刷变学霸
举一反三
【单选题】You’ll have more chances of promotion ______ you work hard.
A.
since
B.
while
C.
as
D.
once
【简答题】participate in run a risk of other than accuse...of pay for object to come upon at one's worst at best end up
【单选题】．It’s disappointing that no one could _________ a good idea to help us out of trouble．
A.
come off it
B.
come up
C.
come up with
D.
come about
【单选题】Chances are you' re _______ the value and reliability associated with the brand value it gives.
A.
attracted
B.
attracted to
C.
attracting
D.
attractive
【单选题】Cao Wenxuan’s new book has just_____ . Let’s go and buy one. [ ]
A.
come over
B.
come down
C.
come on
D.
come out
【单选题】No one could come up with an easy solution to the government' s predicament—labor ______. which is caused by the wars.
A.
decline
B.
vacancy
C.
rarity
D.
shortage
【简答题】判断题图 5-48 图 所示各电路的反馈类型。
【单选题】「合計特殊出生率」とはどのような数に相当しますか。
A.
1時間当たりの平均出生数
B.
一人の女性が一生に産む子どもの数
C.
20代までに出産する女性の割合
D.
生まれてくる赤ちゃんのうちの女の子の割合
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