【正文】 t well C. shell of the feed heater D. feed lines to the boiler 1145 If in doubt as to the tree water level when a boiler is being oilfired, you should _____ 燒油鍋爐運行時，對真實水位沒有把握時，應盡快熄火。 1154 Latent heat changes the _____ of 。 A. swell B. shrinkage C. flash off D. lack of water 1160 A dazzling white burner flame in the boiler furnace indicates _____ A. no bustion B. deposits in the fuel見第 1157題。 A. many thousand times larger than B. the same as C. many thousand times smaller D. none of the above 1165 _____ are used to ensure that ships don39。 A. an oily water separator B. a purifier C. a centrifugal pressor D. a clarifier 1170 A centrifuge arranged to separate impurities and small amounts of water from oil is known as ____離心式分油機設計用來分離油中的雜質(zhì)和少量水時，被稱為分雜機。 A. with dirty water B. with clean water C. by oily water D. by mixed water 1177 A high rate of separation between oil and water is favored by _____ 油滴尺寸大，將有助于油、水分離。 A. Cargo winches B. Mooring winches C. Windlasses D. Cargo hatches 1185 The drive motor will have a brake arranged to failsafe, . it will _____ the load if power fails or machine is stopped. ． 見第 1183題。 A. the slewing motor B. the luffing motor C. the hoisting motor D. none of the above 1193 Among the basic categories of equipment, which of the following are used to convert the hydraulic energy into linear motion? 在液壓系統(tǒng)中，液壓油缸將液壓能轉(zhuǎn)變?yōu)橹木€性運動。 A. cargo crane B. jib C. safe working load D. oil pressure 1196 D 1197 C 1198 B 1199 C 1200 B 1200 _____ play a very important part in hydraulic systems by preventing int6raction between different parts of the hydraulic circuit. 在液壓系統(tǒng)中，單向閥起很重要的作用，它能防止液壓油路中不同部件之間相互影響。 A. the slewing motor B. the luffing motor C. the hoisting motor D. none of the above 1198 When the union purchase derrick is operated, one derrick is positioned over the quayside and the other almost vertically over the _____ 在吊桿式起貨機中，一根吊桿位于碼頭上方，另一根幾乎垂直地位于貨艙的上方。 A. Relief valve B. Direction control valve C. Stop valve D. Pressure control valve 1186 A 1187 D 1188 D 1189 A 1190 B 1191 External and internal leakage in hydraulic systems may be caused by _____ 異常振動、部件過度磨損、油壓異常等都會引起液壓系統(tǒng)內(nèi)外泄露。 A. Cargo winches B. Mooring winches C. Windlasses D. Cargo hatches 1183 The drive motor will have a brake an~nged to failsafe, . it will _____ the load if power fails or machine is ，當失電時它能支住貨物。 A. bowl periphery B. bowl center C. upper surface D. lower surface 1175 In an oily water separator the oil will travel _____ to the oil collecting spaces. 在油水分離器中，油是向上運動到集油室的。 A. rather than B. other than C. in addition that D. except for 1168 Emulsification of oil will occur when mixed with ___油與水混合后會產(chǎn)生乳化。 A. ① and ② B. ① and ③ C. ② and ③ D. ① ② and ③ 1163 The separation of impurities and water from _____ is essential for good bustion of diesel ，這對柴油機發(fā)火燃燒很重要。 A. Water Head Register B. Water Heater Recirculating C. Waste Heat Recovery D. Waste Handle Reference 1159 When the boiler load returns to normal, the drum pressure will rise and steam bubble formation will reduce, causing a fall in water level. This is known as _____當鍋爐負荷回到正常時，鍋筒壓力上升，氣泡減少，水位下降。 A. Descriptions B. Discrepancies C. Different D. Deflections 1146 A 1147 C 1148 B 1149 B 1150 B 1151 Impurities from the boiler water surface can be removed through the _____ 鍋爐水面的雜質(zhì)可通過上排污閥清除。 A. to raise water level B. only while making steam C. to remove scum D. when fire are secured 1143 The water level in a steaming auxiliary boiler will always _____ 輔助鍋爐的水位：降隨蒸汽需求量的變化而變化。 A. scaled B. cracked C. shape changed D. deformed 1136 The tube in a boiler should be blinded if found ____鍋爐管子發(fā)現(xiàn)泄露，應封死。 ② It has no internal valves。 A. ① and ② B. ② and ③ C. ① and ③ D. ① ② and ③ 1125 The _______ pump discharges a nearly constant amount of liquid regardless of pressure. 不管壓力如何，容積式泵的排量幾乎恒定。 A. ① only B. ① ② and ③ C. ① and ③ D. ① ② and ③ 1116 A 1117 C 1118 A 1119 B. 1120 B 1121 The amount of fluid delivered by a gear pump can be regulated by _______ 齒輪泵屬于容積式泵，排量只能通過改變轉(zhuǎn)子的速度來調(diào)節(jié)。 A. to fill 2 tanks at the same time B. to use pump at a higher pressure C. to return liquid to suction side if discharge valve is closed D. All of the above are true. 1111 A 1112 C 1113 B 1114 B 1115 C 1116 The pump discharge pressure will be considerably higher than the pressure at the _______泵的排出壓力比泵進口支管的壓力要高得多。 A. suction B. exhaust C. pressure D. discharge 1110 As for a hydraulic single action vane pump, the inner wall of the stator is usually of ______ ，靜子的內(nèi)壁通常是圓形。 A. throttling the pressure line B. changing the speed of the rotor C. either A or B D. None of the above is true. 1104 The amount of fluid delivered by a reciprocating pump can be regulated by ______ 往復泵屬于容積式泵，排量通過改變柱塞的速度來調(diào)節(jié)。 A. reciprocating pumps B. positive displacement pumps C. centrifugal