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【多选题】
接触器触点已闭合而铁心尚未完全闭合的故障原因有可能是( )。A.
电源电压太低过波动过大
B.
线圈技术参数与使用条件不符
C.
产品本身受损
D.
出头弹簧压力过大
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反馈参考答案：
举一反三
【单选题】When we finally ______ to get home after the tiring long journey, we could hardly move a step further. [ ]
A.
tried
B.
succeeded
C.
managed
D.
attempted
【单选题】When we finally ______ to get home after the tiring long journey, we could hardly move a step further. [ ]
A.
tried
B.
succeeded
C.
attempted
D.
managed
【简答题】When times get tough, we all look for ways to cut back. When we’re hungry, we eat at home instead of going out. We take buses instead of taxis. And we wear our old designer jeans just a few months lon...
【单选题】We had to __________a lot of noise when the children were at home.
A.
go in for
B.
hold on to
C.
put up with
D.
keep pace with
【单选题】When we finally ______ to get home after the tiring long journey, we could hardly move a step further.
A.
tried
B.
succeeded
C.
managed
D.
endeavored
【简答题】When we finally managed A(to get home) after the B(tiring) long journey, we could C(not hardly) move a step D(further).
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