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【单选题】

The series of valves used to control the return flow in well control operations is called the（）.

A、valve assembly

B、standpipe manifold

C、accumulator manifold

D、choke manifold

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更多“The series of valves used to control the return flow in well control operations is called the（）.”相关的问题

第1题

[单选题] A solenoid valve used in a refrigeration system should be installed （）.

A、with the axis of the solenoid horizontal, sensing temperature of the box, and upstream of the thermal expansion valve B、upright, sensing temperature of the box, and upstream of the thermal expansion valve C、upright, sensing temperature of the box, and downstream of the thermal expansion valve D、upright, sensing heat of the tail coil, and upstream of the thermal expansion valve

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第2题

[单选题] Valve lash, or clearance refers to the （）

A、clearance between the top of the valve stem and the rocker arm B、compression of the valve springs C、clearance between the valve seat inserts and the head D、out of roundness of the fuel injection cams

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第3题

[单选题] The globe valve has a bulbous body, housing a valve seat and screw down plug or disc arranged at right angles to the axis of the pipeAccording to the above sentence, which of the following statements is not true?（）

A、The profile of the valve is like a globe B、The valve seat is set into the bulbous body C、The plug or disc of the valve is made vertical to the axis of the pipe D、The valve seat is located at right side of the plug or disc

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第4题

[单选题] Which of the listed components is considered to separate the high pressure side of a refrigeration cycle from the low pressure side of the cycle?（）

A、The condenser and the expansion valve B、The king valve and the solenoid valve C、The compressor and the expansion valve D、The condenser and the solenoid valve

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第5题

[单选题] In comparison to exhaust valves, intake valves of diesel engines may be fabricated from low alloy steels because （）.

A、the beveled edges of the intake valves provide for serf-centering during seating B、intake valves utilize stellite-coated valve seat inserts which reduce wear C、the volume of air passing through intake valves is less than the volume of air passing through exhaust valves D、intake valves are less affected to the corrosive action of exhaust gases

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第6题

[单选题] Which one of following statement is not true concerning the suitable sites of the direct acting relief valve and the pilot operated relieve valve?（）

A、the direct acting relief valve is used for controlling lower flows and pressure B、the pilot operated relief valve is used for controlling higher flows and pressure C、the pilot operated relief valve is used for controlling lower flows and pressure D、the controlling accuracy of direct acting relief valve is worse than that of the pilot operated relief valve

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第7题

[单选题] Unlike the globe valve, gate valves give full bore flow without change of direction, such a valve is not suitable to partially open operationAccording to the above sentence, which of the following statements is not true?（）

A、The globe valve may be suitable for partially open operation B、The globe valve will give full bore flow with change of direction C、The gate valve gives full bore flow with change of direction D、The gate valve is suitable for full bore operation only

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第8题

[单选题] The most inefficient method of voltage reduction from the stand point of power loss, is a/an （）

A、capacitor in series with the load B、inductor in series with the load C、capacitor and inductor in series with the load D、resistor in series with the load

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第9题

[单选题] You are configuring an active/passive cluster of SRX Series devices as the firewall enforcer on a MAG Series device.Which statement is true?（）

A、Multiple Infranet Enforcer instances are created with a single serial number of an SRX Series device defined in each configuration. B、A single Infranet Enforcer instance is created with both serial numbers of the clustered SRX Series devices defined in the configuration. C、Multiple Infranet Enforcer instances are created with a single IP address of an SRX Series device defined in each configuration. D、A single Infranet enforcer instance is created with the VIP of the clustered SRX Series device defined in the configuration.

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