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单选题
343、Your check may not be accurate if you do not vent the IDG.
A
The ventilation of the IDG accelerates your check.for
B
Without venting the IDG, the accuracy of your check will be affected.
C
Only if you reset the IDG, your check is effective.
答案解析
正确答案：B
解析：
解析:accurate 精确的;effective 有效的。accuracy 精确性。
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