Which of the items listed causes a direct acting mechanical governor to operate the engine fuel control linkage?（）
Let H （） the quantity of heat which has been converted into mechanical work.
Which two of these are recommended practices with trunks? （）
Production of mechanical foam by a portable in-line foam proportioner（）.
The main objective of mechanical practice is to help learners to absorb thoroughly the＿＿of a language item.
The main objective of mechanical practice is to help students learn by heart the____ of a language item.
Compared to the amount of concentrated foam liquid used，the amount of low expansion mechanical foam produced is（）.
Which of the following devices is common to both mechanical and hydraulic governors?（）
The major cause of trouble in a mechanical-hydraulic governor is contamination of the hydraulic fluid by （）
The essential part of the diesel engine, whose function is to convert the heat energy into the mechanical power, is the （）.
Which of the general advantages listed does the electrical pyrometer have over the mechanical pyrometer?（）
A(n) （） is a mechanical attack on the metal surface which may be due to a disturbance in the flow of the water over the blade of the propeller.
Which of the following are components of a mechanical seal? （） (1) stationary ring (2) rotational ring (3) packing (4)spring
Oil is supplied to the cylinder wall and （） by means of mechanical lubricators.
Among the basic categories of equipment, which of the following are used to convert mechanical into hydraulic energy?（）
Through a （） pump, the liquid is transferred from the suction to the discharge by the mechanical variation of the volume of a chamber or chambers.
The （）, cage rotor induction motor is the first choice marine motor in most modern ships because of its electrical and mechanical simplicity.
The mechanical efficiency of an engine （） because losses occur in the form of friction.
Freud's practice of psychoanalysis is an example of what type of therapy?
Practical English is a special language used in the situations of practical work.
70. All of the following are practices of good seamanship EXCEPT ______
Which of the following statements is NOT the result of destructive fishing practices？
Which of the following is a questionable practice of British Leyland？
In esplaining the theory of relativisty the scientist states that mechanical laws that
