单选题通常液压装置齿轮箱油比液压油使用寿命()。A更长B更短C差不多D不一定
单选题
通常液压装置齿轮箱油比液压油使用寿命()。
A
更长
B
更短
C
差不多
D
不一定
参考解析
解析:
暂无解析
相关考题:
单选题海图上,潮流图式上只给出一个数字表示(),给出两个数字其中较小的表示(),标注小潮日流速时,则平均流速为()。()A大潮日最大流速;其他日平均流速;3/4小潮日流速B大潮日最大流速;小潮日最大流速;3/2小潮日流速C小潮日最大流速;大潮日最大流速;3/4小潮日流速D大潮日最大流速;大潮日最大流速;1/3小潮日流速
单选题While(),they met with a storm weather.Aat seaBthe ship was at seaCshe was at seaDthey w re at sea
单选题R-12 is generally considered to be a safe, nontoxic, nonflammable, and non-explosive refrigerantIt can, however, become highly toxic when ().Asuperheated outside the systemBin contact with an open flameCheated to the boiling pointDAll of the above
单选题航行中释放救生艇或救助艇是救助落水人员的常用方法之一,但应按照有关规定和要求释放,以确保艇上救助人员的安全;释放救生艇时船舶纵倾应低于10º,横倾应低于20º,船速不应高于();恶劣天气情况下,船舶可采用滞航操船法释放救生艇;为减少和避免大风浪中救生艇的摇摆及与大船碰撞,可用止荡索、碰垫和艇篙。A5knB6knC7knD8kn
单选题Which of the following is a characteristic of a Ro-Ro vessel().APassenger tours available upon dockingBLong port stays necessary to secure vehiclesCShort in port turnaround timesDHeavy vehicles only require lightweight securing equipment
单选题Which of the following element(s) should be taken into account in the preparation of the “Cargo Securing Manual”? ()ADuration of the voyageBTypes of cargo units and vehicles to be carriedCWeight of cargo units and vehiclesDAll of the above
单选题MAN BW公司的ME系列电控型柴油机中,当扫气压力小于等于()bar时,就按“起动顺序”起动辅助鼓风机,当扫气箱中压力达到()bar时,就依次停止这些鼓风机,其停止是按扫气压力逐一减台的A0.4;0.7B0.4;0.6C0.5;0.7D0.5;0.6
单选题Which of the following best describes the thermodynamic effect on the pressure and volume relationship with regards to saturated gases?()AAs pressure decreases, volume increasesBAs volume increases, pressure increasesCAs volume decreases, pressure decreasesDAs pressure increases, volume increases
单选题根据中国人保1986年海洋船舶保险条款,在船舶投保一切险的情况下,保险人对()需负赔偿责任。A船舶自然耗损B潜在缺陷造成的船舶其他部件的损失C船舶正常维修保养费用D状况不良的船舶部件的更换或修理
单选题下列哪些是符合《船员日常防火守则》要求的()。 Ⅰ.易燃易爆物品不准私自存放; Ⅱ.烟头应投入垃圾桶内; Ⅲ.禁止在船上燃放烟花爆竹; Ⅳ.严禁玩弄救生信号弹。AⅠ~ⅣBⅡ~ⅣCⅠ~ⅢDⅠ、Ⅲ、Ⅳ
单选题为便利装卸,同一卸装箱应()。A集中配装B分散配装C配装在特别箱位D上甲板配装