The selection of pressure gauge is mainly based on the medium pressure, ( ).

Generally used on production pipes ( ).

Generally used on corrosive medium pipes ( ).

Meter accuracy levels are divided according to the ( ) of the meter.

A turbine flowmeter is a ( ) flowmeter.

The direction of fluid flow in a rotameter is ( ).

An elliptic flowmeter is a ( ) flowmeter.

The following incorrect statement about bimetallic thermometers is ( ).

The instruments used to measure temperature in the following units are commonly ( ).

The following statement about thermal resistance thermometers that is not true is ( ).

The DCS reads that the temperature of the furnace is measured by the meter that ( ) measures the temperature.

For the air open pneumatic regulator, the signal is increased and the valve is open ( ).

The following should use the air opening valve is ( ).

For air close type pneumatic regulator, signal increase, valve open ( ).

For air open pneumatic control valves, when there is no signal, the valve is in the ( ) state.