正确答案: A

caulked into

题目：Cast iron carrier rings, （） machined grooves, are provided for all the pistons.

查看原题 查看所有试题

学习资料的答案和解析：

[单选题]使用含有（）的燃油添加剂，可使烟灰失去粘性，导致烟灰沉积趋势的减少。Ⅰ.氧化铜；Ⅱ.氧化铁

仅Ⅱ对

[单选题]The engine will fail to start unless （）.

all of the above

[单选题]Increasing the valve clearance between a valve stem and rocker arm, will result in the valve （）

staying open for a shorter period of time

[单选题]Bottom blow valves are installed on auxiliary water-tube boilers to （）

remove suspended and precipitated solids from the boiler water