In the slide box of CA6140 , () is to ensure that when thread machining, the motor-driven longitudinal and transverse feed movement will not be switched on .
A、half nuts mechanism
B、Interlock mechanism
C、unloading pulley
D、over-run clutch
A、half nuts mechanism
B、Interlock mechanism
C、unloading pulley
D、over-run clutch
On July 1 of the current year, a company purchased and placed in service a machine with a cost of $240,000. The company estimated the machine's useful life to be four years or 60,000 units of output with an estimated salvage value of $60,000. During the current year, 15,000 units were produced. Prepare the necessary December 31 adjusting journal entry to record depreciation for the current year assuming the company uses: a. The straight-line method of depreciation b. The units-of-production method of depreciation c. The double-declining balance method of depreciation
A、Interlock mechanism
B、safety clutch
C、over-run clutch
D、friction clutch
A、2f横 =f纵.
B、4f横 =f纵
C、f横 =2f纵
D、f横 =4f纵
A、sufficient stiffness
B、high rotation accuracy
C、good vibration resistance.
D、High speed
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