In an electro-hydraulic steering gear system, when will the variable displacement pump be placed on stroke?（）

A . the Mackenzie　 B . the Great Lakes C . the Yukon　 D . the Hudson Bay

A .  Set the body content type to JSP in the TLD B .  Scriptlet code is NOT legal in the body of st：simple C .  Add scripting-enabled= “true” to the start tag for the st：simple element D .  Add a pass-through Classic tag with a body content type of JSP to the body of st：simple， and      place the scriptlet code in the body of that tag.

A . bridging VLANs on two switches B . bridging two VLANs on one switch C . between two Layer 2 devices with trunking D . between two Layer 2 devices without trunking E . between a Layer 2 device and a Layer 3 device with trunking

A . transmit the rudder angle to the bridge indicator B . prevent the control linkage from striking the stops when hard over C . automatically purge all entrained air from the system D . send hydraulic signals to the receiving unit

A . Set the body content type to JSP in the TLD B . Scriptlet code is NOT legal in the body of st：simple. C . Add scripting-enabled="true" to the start tag for the st：simple element D . Add a pass-through Classic tag with a body content type of JSP to the body of st：simple， and place the scriptlet code in the body of that tag

A .  bridging VLANs on two switches B .  bridging two VLANs on one switch C .  between two Layer 2 devices with trunking D .  between two Layer 2 devices without trunking E .  between a Layer 2 device and a Layer 3 device with trunking

A . trick wheel B . accumulator C . standby pump D . telemotor

A . trick-wheel B . follow-up control C . six-way valve D . Rapson slide

A . The six-way valve opens B . The steering service pump motor is stopped C . The follow-up gear takes the pump off stroke D . The cylinder relief valves bypass oil to the suction side the pum

A . set for maximum torque B . on the purge and vent stroke C . in the neutral position D . rotating backward

A . relieves excessive fluid pressure B . takes the pump off stroke when the desired rudder angle is attained C . synchronizes wheel position with the rudder position D . returns the rudder to midposition when the wheel is released

A . is work B . work C . work

A . the pump going to full stroke B . closing of the six-way valve C . driving the rams up against the stops D . a corresponding slowing or increasing of the pumped flow rate

A.trick wheel B.follow-up control C.six-way valve D.Rapson slide

A．Consumers buy more goods when prices are high B．Producers want to sell all of their goods C．Producers make more goods when prices are high D．Consumers will not buy all of the goods

There is one famous【C7】______ about Saint Nicholas. The story tells【C8】______ Nicholas hearing one day of three beautiful sisters who lived in a miserable【C9】______ on the edge of Myra. The three sisters were very poor. They could【C10】______ earn enough to keep themselves and their old mother from starving to death. When Nicholas heard of their【C11】______ , he was very concerned. He decided to do【C12】______ to help them. One night, when everyone was asleep, Nicholas crept through the streets to the【C13】______ of town. He tiptoed up to the hut【C14】______ where the three sisters lived. He climbed onto the roof and【C15】______ three bags of gold through the hole in the roof where the smoke from the fire came out. Now it so【C16】______ that the three sisters has washed their stockings before they went to bed. The stockings have been hung by the fire to【C17】______ . When Nicholas dropped the gold through the smoke hole, each bag of gold fell into a stocking, The three sisters were overjoyed to find three bags of gold in their stockings when they woke up the next morning. Soon, the story began to【C18】______ . Other people began to hang【C19】______ stockings in the hope of finding bags of gold when they woke up in the morning. From this legend sprang the【C20】______ of hanging stockings up by the chimney on Christmas Eve. Over the years, Saint Nicholas became associated with Christmas. 【C1】 A．acquired B．required C．inquired D．lost

是 否

A．$1,275 B．$1,294 C．$1,339

A．Accrued for over the year and charged to maintenance expenses B．Provided for in advance and charged to maintenance expenses C．Capitalised and depreciated over the period to the next overhaul D．Charged to profit or loss when the expenditure takes place