题目内容

Whentheboilerloadreturnstonormal,thedrumpressurewillriseandsteambubbleformationwillreduce,causingafallinwaterlevelThisisknownas().

A. swell
B. shrinkage
C. flashoff
D. lackofwater

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Pleasearrange()asurveyortoinspectthedamagedbulkhead.

A. of
B. for
C. with
D. in

在并联型石英晶体振荡电路中,晶体等效为()。

A. 电感
B. 电容
C. 电阻近似为零

Sometimesitisdesirabletoconnectamemberbothbyrivetingandwelding.WhichstatementisTRUEconcerningthisprocedure?()

A. Tearingthroughthememberismorelikelyinthistypeconnection
B. Theweldmaybebrokenbythestressescausedbyriveting
C. Theweldincreasesthetensilestressontherivetheads
D. Theweldingmustbecompletedbeforetherivetingcommences

登録读音正确的是()

A. とうろく
B. とろく
C. とうろ
D. とうる

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