题目内容：
CW-430差压计的附记压力部分是由一个()螺旋弹簧管和在原理上与差压显示部分相同的四连杆机构组成的。A．(A)单圈;
B．(B)无限位件;
C．(C)多圈;
D．(D)有限位件
参考答案：
单选：CW-430差压计的附记压力部分是由一个()螺旋弹簧管和在原理上与差压显示部分相同的四连杆机构组成的。A．(A)单圈;B．(B)无限位件;C
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- 题目类型：单选
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A．(A)单圈;
B．(B)无限位件;
C．(C)多圈;
D．(D)有限位件
A．(A)单圈;
B．(B)无限位件;
C．(C)多圈;
D．(D)有限位件
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