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【单选题】
电针仪最大输出电压为40V以上时，最大输出电流应限制在A.
2mA以内
B.
1.5mA以内
C.
1mA以内
D.
10mA以内
E.
10mA以上
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反馈参考答案：
举一反三
【单选题】Which letter is from a regular customer?
A.
Subject: To Joe: inquiry for QA 100
B.
Subject: the best price list for chainsaw
C.
Subject: sell slippers
D.
Subject: interested in the products you're selling on Alibaba.com
【单选题】The letter is from my sister, __is working in Beijing. A. which B. that C. whom D. who
A.
a
B.
b
C.
c
D.
d
【简答题】阅读下面的流程图，输出max的含义是___________________________。
【多选题】Which letter is from an eager buyer?
A.
Re: in demand for your STL 101 before this weekend
B.
Re: urgent need of your train toys
C.
Re: the best quotation for ST 300
D.
Re: custom-made products
【单选题】Which character is not from Scarlet Letter?
A.
Hester Prynne.
B.
Roger Chillingworth.
C.
Pearl.
D.
Ahab.
【简答题】光纤的数值孔径NA＝sinθ max 它的含义是什么？
【简答题】阅读右面的流程图，输出max的含义是___________ _______________________。
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