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【单选题】
关于磁致伸缩物位计,下列说法错误的是()A.
属于接触式物位计
B.
受安装和维护的限制，测量范围不能太大，多用于卧式储罐的物位测量
C.
介质密度变化不会影响测量精度
D.
精度很高，可以达到计量级精度
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举一反三
【单选题】What did the man do on his first day at school?
A.
He took all his toys with him.
B.
He took his Teddy with him.
C.
He didn't take any toys with him.
D.
He took some of his toys with him.
【单选题】What did the man do after he first learned of his illness? 查看材料
A.
He was operated on immediately.
B.
He retired from his job.
C.
He researched cancer treatments.
D.
He felt sad， doing nothing.
【单选题】–What did you think of the place? --- I didn’t care for it at ____first, but after ____ time I got to like it.
A.
/; a
B.
the; a
C.
a; the
D.
/; the
【单选题】-What did you think of ______ president?-I didn’t care for him at first，but after ____ time I get to like him.
A.
the； a
B.
/； the
C.
the； the
D.
/； a
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