【正文】 A. dock B. hold C. pedestal D. machinery space 1199 Cargo handling unit is rated according to the _____ to be lifted. 貨物裝卸裝置是根據(jù)裝卸的安全工作負荷標定的。 A. unusual vibration B. excessive worn parts C. abnormal pressure D. any of the above 1192 In a general cargo crane, _____ is fitted to raise or lower the jib. 在回轉式起貨機 (克令吊 )中，變幅裝置用于調節(jié)吊臂的高度。 A. lift B. put C. take D. hold 1184 _____ are used for hauling in or letting out the wires which fasten the ship to the 。 A. upwards B. downwards C. outwards D. forwards 1171 B 1172 B 1173 A 1174 B 1175 A 1176 When started, a plete oily water separating unit is first filled _____ . The oily water mixture is then pumped through the inlet pipe into the coarse separating partment. 油水分離器開始工作時應首先注滿清水。 A. air B. black oil C. water D. ice cream 1169 A centrifuge arranged to separate two liquids is known as _____ 離心式分油機設計用來分離兩種液體時，被稱為分水機。 A. lube oil B. fuel oil C. turbine oil D. grease 1164 Highspeed rotation in a centrifugal purifier can produce a force _____ the force of 。這種現(xiàn)象被稱為“收 縮”。 A. safety valve B. blow down valve C. scum valve D. feed check valve 1152 In motor ship, _____ is often used to recover some of the heat carried in the exhaust gases from the main engine .在內燃機船上，裝備廢氣鍋爐用來回收主機廢氣攜帶的熱量 A. an diesel oil heater B. a waste heat boiler C. a fresh water generator D. all the above 1153 _____ will be used to blow away the bustion products from the tube surfaces. A. The blow down valve B. The scum valve C. The air release cock D. The sootblower 吹灰器用來吹除管子表面的燃燒產物。 A. rise when the steam pressure is increased B. remain constant as long as the feed pump operates C. fall when the steam pressure is decreased D. vary as the steam demand changes 1144 The boiler feed water check valves are located on the _____鍋爐給水單向閥門位于給水管路中。 A. sealed B. informed C. leaky D. deformed 1137 In a _____ boiler the water flows through the inside of the tubes while the hot gases pass around the ，水在管子內流動，而高溫氣體在管子外流動。 ③ Upon accidental closing of discharge valve, excessive pressure will not build up. 離心泵與往復泵相比具有以下優(yōu)點：排量連續(xù)；無內部閥件；如果排出閥關閉，不會產生過高的壓力。 A. mixedflow B. axialflow C. centrifugal D. displacement 1121 B 1122 D 1123 C 1124 D 1125 D 1126 Which of the following pumps is used where a relatively high pressure and small capacity are required?往復泵一般用于高壓頭、小排量的場合。 A. throttling the pressure line B. changing the speed of the rotor C. either A or B D. None of the above is true 1122 Attempts are made to eliminate axial thrust in centrifugal pump by _______ 消除離心泵的軸向力，可使用具有平衡孔的葉輪，也可使用對稱葉輪。 A. pump entry branch B. outlet pipe C. impeller D. None of the above is tree. 1117 Which of the following pumps belongs to centrifugal pump? 擴壓式泵屬于離心式泵。 A. circular B. elliptical C. rectangular D. hexagon 1106 B 1107 B 1108 A 1109 A 1110 A l111 As for a hydraulic vane pump, which of the following is in contact with the vanes during working: ① the rotor。 A. throttling the pressure line B. changing the speed of the piston C. either A or B D. None of the above is tree. 1105 The amount of fluid delivered by a positive displacement pump can be regulated by _____對于容積式泵，排量只能通過改變轉子的速度來調節(jié)。 A. kg B. MPa C. meter fluid colunm D. None of the above is true. 1097 A centrifugal pump produces the required pressure energy by means of a rotating _______ provided with 。 第二章船舶輔助機械 1090 A vane pump belongs to _______ according to its working principle. 根據(jù)工作原理，葉片泵屬于容積式泵。 A. propeller B. impeller C. circumference D. screw 1098 The discharge flow of a reciprocating pump is____ 往復泵的排量具有脈沖性。 A. throttling the pressure line B. changing the speed of the driving rotor C. either A or B D. None of the above is true. 1101 B 1102 A 1103 C 1104 B 1105 B 1106 Which of the following pumps are seEpriming, and can deal with hquid from a level below the pump? ① reciprocating。 ② the pump shaft。 A. Piston pump B. Screw pump C. Diffuser pump D. Waterring pump 1118 The volute pump is one in which the impeller ____對于旋渦泵，葉輪將液體排至漸漸變寬的流道。 A. providing the impeller with balancing holes B. the use of symmetrical impeller C. neither A nor B D. either A or B 1123 Which of the following pumps will build up a bursting pressure or stall their motors if the discharge valves are closed? ① gear。選項 C應是“ reciprocating pump”。 A. ① ② B. ② ③ C. ① ② ③ D. ② only 1131 Which of the following pumps are selfpriming, and can deal with liquid from a level below the pump: ① reciprocating 。 A. watertube B. firetube C. exhaust gas D. none of the above 1138 In a _____ boiler the hot gases from the furnace pass through the tubes while the water is on the outside. 對于火管鍋爐，高溫氣體在管子內流動，而水在管子外流動。 A. feed pump suction line B. ho