网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
单选题
A heavy，thick-walled tube，usually steel，used between the drill pipe and the bit in the drill stem to weight the bit in order to improve its performance is called a（）.
A
heavy-walled drill pipe
B
tool joint
C
down hole tool
D
drill collar
参考答案
参考解析
解析：
暂无解析
更多 “单选题A heavy，thick-walled tube，usually steel，used between the drill pipe and the bit in the drill stem to weight the bit in order to improve its performance is called a（）.A heavy-walled drill pipeB tool jointC down hole toolD drill collar” 相关考题
考题
Which can be used for transferring a heavy patient between bed and trolley? ()
A. sliding sheetB. sliding boardC. banana boardD. sling
考题
Stern tube and strut(支柱) bearings lined with hardwood or rubber composition materials are lubricated with______.A.saltwaterB.graphite(石墨)C.light lubricating oilD.heavy lubricating oil
考题
Chain slings are suitable for heavy slender articles，such as ________ ．A.timber or steel railsB.locomotives or boilersC.railway passenger coachesD.motor vehicles
考题
A heavy，thick-walled tube，usually steel，used between the drill pipe and the bit in the drill stem to weight the bit in order to improve its performance is called a ______.A.heavy-walled drill pipeB.tool jointC.down hole toolD.drill collar
考题
A heavy steel device that is set on the sea floor and used as a drilling template in offshore drilling operations is called a ______.A.temporary guide baseB.permanent guide baseC.guide frameD.foundation template
考题
A pelican hook ______.A.can be released while under strainB.is used for boat fallsC.is used for extra heavy loadsD.is used for light loads only
考题
Which of the following statements is true regarding the VERSIONS BETWEEN clause？（） A、 The VERSIONS BETWEEN clause may be used in DML statements.B、 The VERSIONS BETWEEN clause may be used in DDL statements.C、 The VERSIONS BETWEEN clause may not be used to query past DDL changes to tables.D、 The VERSIONS BETWEEN clause may not be used to query past DML statements to tables.
考题
重吊杆用于吊大的重件。（）A、Heavy derrick is used for lifting large heavy cargo.B、Derrick is used for lifting large heavy cargo.C、Heavy derrick is used for lifting dry bulk cargo.D、Derrick is used for lifting dry bulk cargo.
考题
单选题A carling is used aboard ship（）.A
as a connecting strap between the butted ends of platingB
to stiffen areas under points of great stress between beamsC
to prevent the anchor from fouling when the brake is releasedD
to provide an extra heavy fitting in a heavy lift cargo rig
考题
单选题A viscosity regulator used for an engine is usually provided in order to （） for an engine burning heavy fuel oil.A
regulate the fuel supplyB
maintain a constant fuel viscosity at the fuel valvesC
maintain efficient coolingD
alter the fuel density
考题
单选题A pelican hook（）.A
can be released while under strainB
is used for boat fallsC
is used for extra heavy loadsD
is used for light loads only
考题
单选题A heavy steel device that is set on the sea floor and used as a drilling template in offshore drilling operations is called a（）.A
temporary guide baseB
permanent guide baseC
guide frameD
foundation template
考题
单选题Compared to internal structural plating. The exterior hull plating on a vessel is usually（）.A
strongerB
thinnerC
more corrosion resistantD
a lower grade steel
考题
单选题Diesel engine waste heat boiler construction is usually of the fire-tube or（）A
cyclone furnace boiler typeB
dry back boiler typeC
water-tube typeD
critical circulation boiler type
考题
单选题（） are two vertical supports，usually steel，one each side of the centerline of the ship used to support booms.A
ShroudsB
King postsC
StaysD
Turnbuckles
考题
单选题重吊杆用于吊大的重件。（）A
Heavy derrick is used for lifting large heavy cargo.B
Derrick is used for lifting large heavy cargo.C
Heavy derrick is used for lifting dry bulk cargo.D
Derrick is used for lifting dry bulk cargo.
考题
单选题A fid is a（）.A
mallet used when splicing wire ropeB
sharp pointed crow bar used to unlay wire ropeC
tapered steel pin used to separate wire ropeD
tapered wooden pin used when splicing heavy rope
考题
单选题A heavy steel curved arch constructed athwartships and above the after deck on a towing vessel is sometimes called a（）.A
main braceB
tow spanC
jockey barD
None of the above
考题
单选题Chain slings are suitable for heavy slender articles，such as（）.A
timber or steel railsB
locomotives or boilersC
railway passenger coachesD
motor vehicles
考题
单选题Compared to internal structural plating，the exterior hull plating on a vessel is usually（）.A
strongerB
thinnerC
more corrosion resistantD
a lower grade steel
考题
单选题Which of the following statements is true regarding the VERSIONS BETWEEN clause？（）A
The VERSIONS BETWEEN clause may be used in DML statements.B
The VERSIONS BETWEEN clause may be used in DDL statements.C
The VERSIONS BETWEEN clause may not be used to query past DDL changes to tables.D
The VERSIONS BETWEEN clause may not be used to query past DML statements to tables.
考题
单选题Fuel injectors used in heavy fuel oil systems are usually provided with cooling to reduce（）.A
cold corrosion of the nozzlesB
fuel viscosity for better atomizationC
carbon accumulation on the nozzlesD
fuel detonation in the cylinders
考题
单选题A carling is used aboard ship（）.A
as a connecting strap between the butted ends of platingB
to stiffen areas under points of great stress between beamsC
to prevent the anchor from fouling when the brake is releasedD
to provide an extra heavy fitting in a lift cargo released
考题
单选题A vessel is constructed with a steel hull and an aluminum superstructure. Which statement is TRUE?（）A
The aluminum will provide greater resistance to the spread of fire by conductionB
The aluminum structure is usually attached to a steel coaming by a method that insulates the two metalsC
If the superstructure is stressed，an aluminum structure requires additional expansion joints to prevent fractureD
The steel at the area of the aluminum-to-steel connection must be closely checked for galvanic corrosion
热门标签
最新试卷