Decide which of the choices given below would correctly complete the passage if inserted in the corresponding blanks. Mark the correct choice for each blank.

Process control is a___1___ applied to the control of variables in a manufacturing___2__. Chemical plants, oil refineries, food processing plants, blast furnaces, and steel mill are examples of production processes to which ___3___ control is applied. Process control is concerned ___4___maintaining at a desired value ___5___process variables as temperature, pressure, flow rate, liquid level, viscosity, density, and composition.
Much current work in process control ___6___extending the use of the digital computer to provide direct digital control (DDC) of the process variables. ___7___direct digital control the computer calculates the values of the manipulated variables directly from the ___8___of the set points and the ___9___of the process variables. The decisions of the computer are applied to digital actuators in the process. Since the computer duplicates the analog controller action, these conventional controllers are no ___10___needed.
1.a. term        b. vocabulary      c.idea       d. character
2.a. processing   b. processed       c. to process  d.process
3. a. automation  b. automated       c. automatic  d. direct
4.a. about       b. on             c. to         d.with
5.a. so          b. such           c.that        d. /
6.a. involve     b. involving        c.involves    d. involved
7. a.During     b.In               c. At        d. On
8.a.value       b. to value         c.values      d. valuing
9. a. measure    b. measurements    c.measures   d. measurement
10.a. long      b. way  c.longer  /d.
Key: 1.a  2.d  3. c  4.d  5.b  6.c  7.b  8.c  9.b  10.c