更多"A(n) （） is a special type of valve "的相关试题:
[单项选择]The valve which is most suited for regulating the flow through a pipeline is a （）
A. gate valve
B. globe valve
C. swing-check valve
D. plug-cock valve
[单项选择]Each cylinder has one starting valve which is usually opened by air pressure and closed by （）
A. nuts and bolts
B. new joints
C. spring force
D. sealing rings
[单项选择]
Leaky exhaust valve will result in which of the following?（）
(1) high exhaust temperature;
(2) low compression pressure;
(3) low firing pressure.
A. (1) and (2)
B. (1) only
C. (2) only
D. (1),(2) and (3)
[单项选择]The shut off valve at the gasoline tank which can be operated from outside the tank space （）.
A. controls the amount of gasoline to the engine
B. shuts off the gasoline supply at the tank
C. is used if the gasoline tank leaks
D. All of the above
[单项选择]Valve overlap is the period during which （）.
A. the inlet valve is open
B. the exhaust valve is open
C. both valves are closed
D. both valves are open
[单项选择]Which type of attack is characterized by flood of packet that requesing a TCP connection to a server?（）
A. denial of service
B. brute force
C. reconnaissance
D. Trojan horse
[单项选择]Which type of EIGRP route entry describes a feasible successor?（）
A. a primary route,stored in the routing table
B. a backup route,stored in the routing table
C. a backup route,stored in the topology table
D. a primary route,stored in the topology table
[单项选择]For which type of connection should a straight-through cable be used?（）
A. switch to switch
B. switch to hub
C. switch to router
D. hub to hub
E. router to PC
[单项选择]Which type of attack is characterized by a flood of packets that are requesting a TCP connection to a server（）。
A. denial of service
B. brute force
C. reconnaissance
D. Trojan horse
[单项选择]Which type of link is generally used to connect shots of anchor chain（）.
A. Detachable
B. Open
C. Pear shaped
D. Stud link
[单项选择]From which type of cloud can a tornado or waterspout develop?（）
A. Nimbostratus
B. Altostratus
C. Cumulonimbus
D. Cirrus
[单项选择]Which type of precipitation is a product of the violent convection found in thunderstorms（）.
A. Snow
B. Freezing Rain
C. Hail
D. Sleet
[单项选择]A built-up exhaust valve is one in which （）.
A. the stem and heads are made of different material
B. low-alloy steel is used throughout
C. a replaceable valve disk is welded to the head
D. the self-centering action comes from motion of the valve stem in the guide
[单项选择]Which type of cable is used to connect the COM port of a host to the COM port of a router or switch?（）
A. crossover
B. straight-through
C. rolled
D. shielded twisted-pair
[单项选择]Which type of cable should be used to make a connection between the Fa0/0 port on a router and the Fa0/0 port switch?（）
A. Rollover cable
B. Console cab le
C. Crossover cable
D. Straight-through cable
E. Serial cable
[单项选择]On which type davit does the davit head stay at the same height?（）
A. Radial
B. Sheath-screw
C. Quadrantal
D. Gravity
[单项选择]Loran-C is which type of system（）.
A. Reflected electron
B. Electrical radiation
C. Quarterpoint electrical navigation
D. Hyperbolic radio navigation
