皮皮学，免费搜题
登录
搜题
【单选题】
无锡影视城将 “古战船太湖” 水上项目免费送给旅行社，但却照样挂牌标价，这是对 的营业推广。
A.
旅游促销人员
B.
旅游中间商
C.
散客旅游者
D.
团队旅游者
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
.
..
皮皮学刷刷变学霸
举一反三
【单选题】Redhat公司发布的Linux版本中,若要使得用户登录验证,需要修改以下( )脚本。
A.
/etc/inittab
B.
/etc/passwd
C.
/etc/shadow
D.
/etc/group
查看完整题目与答案
【单选题】Lubricating oil systems for diesel engine journal bearings are usually lubricated by which of the following types of lubricating oil systems?
A.
Splash
B.
Gravity
C.
Pressure
D.
Bypass
查看完整题目与答案
【单选题】In engines with system, the lubricating oil can be added to the engine through the filling hole in the crankcase cover, by using a hand oil can, or through the separator pipe
A.
lubricating oil
B.
dry sump
C.
circulated tank
D.
wet sump
查看完整题目与答案
【单选题】For diesel engine piston cooling, lubricating oil can be supplied to the pistons by a/an _____.
A.
oil spray
B.
oil bath
C.
oil control rings
D.
drilled passage through the camshaft
查看完整题目与答案
【单选题】The oil lubricating diesel engine cylinders usually contain additives formulated to impart a high degree of alkalinity to _____ the acid conditions.
A.
invade
B.
provide
C.
detergent
D.
neutralize
查看完整题目与答案
【单选题】Engine coolant accumulating in the diesel engine lubricating oil can result from a _______.
A.
low oil pressure
B.
high coolant pressure
C.
leaking fuel injector
D.
cracked cylinder head or liner
查看完整题目与答案
【单选题】Lubricating oil for an engine is stored at the bottom of the _____, known as the sump or in a drain tank located beneath the engine.
A.
sea cheat
B.
air receiver
C.
crankcase
D.
water box
查看完整题目与答案
【单选题】Excessive lubricating oil consumption in a running diesel engine can be caused by ________.
A.
clogged lube oil piping
B.
excessive valve-guide clearance
C.
high lube oil viscosity
D.
low lube oil temperature
查看完整题目与答案
【简答题】What's the function of the lubricating oil in main engine?
查看完整题目与答案
【单选题】In a normally operating diesel engine, the main cause of lubricating oil contamination in the crankcase is a result of the _____.
A.
metal particles loosened by wear
B.
air when no air cleaners are used
C.
condensation of water vapors
D.
breakdown of the lubricating oil by dilution
查看完整题目与答案
相关题目：
【单选题】Redhat公司发布的Linux版本中,若要使得用户登录验证,需要修改以下( )脚本。
A.
/etc/inittab
B.
/etc/passwd
C.
/etc/shadow
D.
/etc/group
查看完整题目与答案
【单选题】Lubricating oil systems for diesel engine journal bearings are usually lubricated by which of the following types of lubricating oil systems?
A.
Splash
B.
Gravity
C.
Pressure
D.
Bypass
查看完整题目与答案
【单选题】In engines with system, the lubricating oil can be added to the engine through the filling hole in the crankcase cover, by using a hand oil can, or through the separator pipe
A.
lubricating oil
B.
dry sump
C.
circulated tank
D.
wet sump
查看完整题目与答案
【单选题】For diesel engine piston cooling, lubricating oil can be supplied to the pistons by a/an _____.
A.
oil spray
B.
oil bath
C.
oil control rings
D.
drilled passage through the camshaft
查看完整题目与答案
【单选题】The oil lubricating diesel engine cylinders usually contain additives formulated to impart a high degree of alkalinity to _____ the acid conditions.
A.
invade
B.
provide
C.
detergent
D.
neutralize
查看完整题目与答案
【单选题】Engine coolant accumulating in the diesel engine lubricating oil can result from a _______.
A.
low oil pressure
B.
high coolant pressure
C.
leaking fuel injector
D.
cracked cylinder head or liner
查看完整题目与答案
【单选题】Lubricating oil for an engine is stored at the bottom of the _____, known as the sump or in a drain tank located beneath the engine.
A.
sea cheat
B.
air receiver
C.
crankcase
D.
water box
查看完整题目与答案
【单选题】Excessive lubricating oil consumption in a running diesel engine can be caused by ________.
A.
clogged lube oil piping
B.
excessive valve-guide clearance
C.
high lube oil viscosity
D.
low lube oil temperature
查看完整题目与答案
【简答题】What's the function of the lubricating oil in main engine?
查看完整题目与答案
【单选题】In a normally operating diesel engine, the main cause of lubricating oil contamination in the crankcase is a result of the _____.
A.
metal particles loosened by wear
B.
air when no air cleaners are used
C.
condensation of water vapors
D.
breakdown of the lubricating oil by dilution
查看完整题目与答案