[单选题]在拆卸回弯头的堵头时,可在停炉后温度较高的情况下先松动,然后等到回弯头温度降到()时再拆卸,防止堵丝楔死。
正确答案 :C
C、150~100℃
[单选题]The replacement piping for diesel engine high pressure fuel systems must be the same length and diameter as the original piping to ().
正确答案 :D
maintain specified injection characteristic
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