更多"A direct current passing through a "的相关试题:
[单项选择]A direct current passing through a wire coiled around a soft iron core is the description of a simple（）.
A. magnetic shield
B. electromagnet
C. piezoelectric device
D. electromagnetic domain
[单项选择]When the current flow through a copper wire increases, its （）
A. resistance will decrease
B. insulation will bum
C. temperature will increase
D. conductivity will increase
[单项选择]If kinking results while wire rope is being coiled clockwise，you should（）.
A. coil it counterclockwise
B. not coil it
C. take a turn under
D. twist out the kinks under a strain
[单项选择]Right-laid line should be coiled（）.
A. clockwise
B. counterclockwise
C. either clockwise or counterclockwise
D. on a reel
[单项选择]When a line is spirally coiled about its end and lying flat on deck，it is said to be（）.
A. coiled
B. faked
C. flemished
D. seized
[单项选择]There is sufficient anchorage for（）at all time around the No.1 buoy and for smaller vessels around the No.4 buoy.
A. deep laded vessels
B. deeply load vessels
C. deep loading vessels
D. deeply loaded vessels
[单项选择]direct表示（）
A. 8位立即数
B. 16位立即数
C. 8位直接地址
D. 16位地址
[单项选择]Galvanizing would be suitable for protecting wire rope which is used for（）.
A. cargo runners
B. stays
C. topping lifts
D. All of the above
[单项选择]The major cause of anchor buoy pendant wire failures is（）.
A. corrosion
B. rough weather
C. defective sockets
D. mishandling
[单项选择]What is the accepted standard for wire rope falls used in connection with the lifeboat gear?（）
A. Six by seven galvanized wire rope
B. Six by twenty-four improved plow steel wire rope
C. Six by thirty-seven preformed fiber-core wire rope
D. Six by nineteen regular-lay filler wire rope
[单项选择]Measure （） by means of lead wire.
A. the clearance of the main bearing
B. the play of the miler bearing
C. the gap of the main bearing
D. the tolerance of the main bearing
[单项选择]A device commonly used to secure the pendant wire when it is initially passed to an anchor handling vessel is（）.
A. pelican hook
B. connecting link
C. shackle
D. retaining hook
[单项选择]The resistance of electric wire will decrease as its （）
A. length increases
B. cross-sectional area increases
C. temperature increases
D. percent of metallic purities increases
[单项选择]Adjust （） by means of lead wire.
A. the clearance of the main bearing
B. the diameter of main bearing
C. the gap of main beating
D. the tolerance of main bearing
[单项选择]In a combination chain and wire rope mooring system，the anchor chain is deployed at the anchor end of the line to（）.
A. increase fatigue life of the system
B. reduce the time to retrieve the line
C. increase the holding power
D. reduce the catenary
