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【多选题】
关于超声探头，叙述正确的有
A.
发射超声波是超声换能器的逆压电效应
B.
接收回声信号是换能器的压电效应
C.
单层匹配层可提高宽频探头的信噪比
D.
超声耦合剂可使探头与检查部位匹配良好
E.
超声探头使用时要避免摔碰、折断导线
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参考答案：
举一反三
【单选题】It was at the station ( ) I met my old friend
A.
when
B.
where
C.
which
D.
that
查看完整题目与答案
【单选题】在进行少量载荷变动对初稳性高度影响值的近似计算时,假定
A.
货物重量不超过500t
B.
船舶排水量不变
C.
船舶重心高度变化忽略不计
D.
横稳心距基线高度的变化忽略不计
查看完整题目与答案
【单选题】I met my old friend when I _____ to hotel. [     ]
A.
Go back
B.
come back
C.
went back
D.
come
查看完整题目与答案
【判断题】( ) 将无锡灵山大佛与四川乐山大佛相比较交使用的是类比法
A.
正确
B.
错误
查看完整题目与答案
【单选题】The man _______ came to our party with a present is my old friend. [     ]
A.
when
B.
which
C.
who
查看完整题目与答案
【单选题】The other day, when I was wandering in the street I ________ one of my old friend, Jim.
A.
came over
B.
came across
C.
came up to
D.
came around
查看完整题目与答案
【单选题】在进行少量载荷变动对初稳性高度影响值的近似计算时，常假定（）。
A.
货物重量不超过500t
B.
船舶排水量不变
C.
船舶重心高度变化忽略不计
D.
横稳心距基线高度的变化忽略不计
查看完整题目与答案
【单选题】I am filled _  pleasure when I saw my old friend. [     ]
A.
in
B.
with
C.
out
D.
on
查看完整题目与答案
【单选题】I met my old friend when I _____ to hotel. [     ]
A.
go back
B.
come back
C.
went back
D.
come
查看完整题目与答案
【单选题】When my old friend Brian urged me to accept a cigarette, it was___I could bear.
A.
less than
B.
more than
C.
rather than
D.
other than
查看完整题目与答案
相关题目：
【单选题】It was at the station ( ) I met my old friend
A.
when
B.
where
C.
which
D.
that
查看完整题目与答案
【单选题】在进行少量载荷变动对初稳性高度影响值的近似计算时,假定
A.
货物重量不超过500t
B.
船舶排水量不变
C.
船舶重心高度变化忽略不计
D.
横稳心距基线高度的变化忽略不计
查看完整题目与答案
【单选题】I met my old friend when I _____ to hotel. [     ]
A.
Go back
B.
come back
C.
went back
D.
come
查看完整题目与答案
【判断题】( ) 将无锡灵山大佛与四川乐山大佛相比较交使用的是类比法
A.
正确
B.
错误
查看完整题目与答案
【单选题】The man _______ came to our party with a present is my old friend. [     ]
A.
when
B.
which
C.
who
查看完整题目与答案
【单选题】The other day, when I was wandering in the street I ________ one of my old friend, Jim.
A.
came over
B.
came across
C.
came up to
D.
came around
查看完整题目与答案
【单选题】在进行少量载荷变动对初稳性高度影响值的近似计算时，常假定（）。
A.
货物重量不超过500t
B.
船舶排水量不变
C.
船舶重心高度变化忽略不计
D.
横稳心距基线高度的变化忽略不计
查看完整题目与答案
【单选题】I am filled _  pleasure when I saw my old friend. [     ]
A.
in
B.
with
C.
out
D.
on
查看完整题目与答案
【单选题】I met my old friend when I _____ to hotel. [     ]
A.
go back
B.
come back
C.
went back
D.
come
查看完整题目与答案
【单选题】When my old friend Brian urged me to accept a cigarette, it was___I could bear.
A.
less than
B.
more than
C.
rather than
D.
other than
查看完整题目与答案
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