×
单选题
如果污染物造成孔堵塞超过 50%，就要清洁显示组件后面的孔。
A
If as many as 50% of the holes are contaminated, you should clean the display units behinds the holes.
B
The holes on the bottom of the display unit should be cleaned once over 50% of them are clogged due to contamination.
C
If contamination causes a blockage of more than 50 percent of the holes, then clean the holes on the rear of the display units.
答案解析
正确答案：C
相关知识点：
孔堵塞超半，清洁显示后孔
相关题目
单选题
Personnel must obey this procedure.
单选题
If the drain hole is clogged, clean it.
单选题
Your check may not be accurate if you do not vent the IDG.
单选题
These buses receive power directly from the battery.
单选题
A small quantity of oil stays in the starter.
单选题
Operation of the handle releases the gas, and the slide-raft inflates.
单选题
Check entire system to determine the cause of interference.
单选题
Encircle each screw hole with sealant.
单选题
If the hydraulic pump does not give a pressure of 3000 psi, use the electric pump.
单选题
Remove the sleeve to release the sliding tube.
