What were then the alternatives before the, premeditatedly (respectively) and inadvertently, keyless couple. [Please select]
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"Line clear" appears on the opening, and also at that of A's keyless disc. [Please select]
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C repeats the bell code, and pins indicator at "Line clear," shown on B's keyless disc also. [Please select]
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Unless his keyless indicator is at normal, he may not ask, "Is line clear." [Please select]
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There are two forms of "going-barrel" keyless mechanism--(1) The rocking bar; (2) the shifting sleeve. [Please select]
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He stooped down, examined the keyless lock, shook it gently, gazed upwards and downwards as though in vain search of bolts that were never there. [Please select]
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CLOCKS AND WATCHES:--A short history of timepieces--The construction of timepieces--The driving power--The escapement--Compensating pendulums--The spring balance--The cylinder escapement--The lever escapement--Compensated balance-wheels--Keyless winding mechanism for watches--The hour hand train. [Please select]
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