（1）only
（1）and（2）
（1），（2）and（3）
（2）and（3）
第1题：
Which of the following protocols can be found at the application layer?（）
第2题：
To which of the following resources can a lock be applied?（）
第3题：
A.RSH
B.SNMP
C.FTP
D.TELNET
第4题：
gear
nonpositive displacement
positive displacement
rotary
第5题：
The high discharge pressure of the rotary pumps permits a larger volume of fluid per unit time than the reciprocating pump
Rotary pumps are capable of pumping more fluid than reciprocating pumps of the same weight
Rotary pumps occupy only one-half the space of reciprocating pumps
Rotary pumps eliminate discharge slippage of the pumped liquid, while this does not hold true for a reciprocating pump
第6题：
Which of the following methods can move files in clear text and can be easily intercepted?（）
第7题：
reciprocating pump
vane pump
screw pump
centrifugal pump
第8题：
Which statement is TRUE concerning deep well self-priming pumps ________．
A.When loading oil cargo，it is always loaded via the discharge line through to the pump until the tank is topped off
B.Stripping systems are generally eliminated for the purposes of cargo handling
C.In recent years deep well pumps have become increasingly unpopular in product tankers and medium size crude ships
D.There is no danger of damaging the pump from overheating
第9题：
（1）only
（1）and（2）
（1），（2）and（3）
（2）and（3）
第10题：
stuffing boxes eliminate the leakage problems usually associated with other gear pumps
it is not necessary to closely maintain design clearances with this pump
they are essentially self-priming and produce a high suction lift
these pumps are designed with extreme tooth angled