正确答案: A
the latter
题目:Emulsion oils and sodium nitrite are both approved additives, but () cannot be used if any pipes are galvanized or if soldered joints exist.
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学习资料的答案和解析:
[单选题]吊缸发现燃烧室零件表面有水锈时,表明()产生穿透性裂纹。
气缸或活塞
[单选题]轴承在涡轮增压器中居重要地位,它应保证()。Ⅰ.转子的平衡合格;Ⅱ.可靠地高速回转;Ⅲ.转子运转平稳;Ⅳ.准确固定转子位置;Ⅴ.转子与定子的间隙符合要求。
Ⅱ+Ⅲ+Ⅳ
[单选题]舵杆不允许有()。
横向裂纹
[单选题]GSK983进行DNC方式操作时,方法是进入()
通讯方式,任意选择程序号输入
[单选题]When the follower is on the base circle of the cam, the pump plunger is at the () of its stroke.
bottom
[单选题]Turbulence in a diesel engine cylinder is of major importance in providing ().
complete fuel/air mixing
[单选题]The main purpose of the piston oil scraper rings is to ().
reduce the amount of lube oil burned in the combustion chamber