单选题
发布日期:2021-03-22
to inject cleaning additives when the bilges are extremely dirty
when the main condenser becomes fouled, in order to provide additional cooling water circulation
to connect the rose box to the independent bilge suction
if the bilges become flooded and they can not be emptied by any other means
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首次观测沉降观测点高程值是以后各次沉降观测用以比较的基础,其精度要求高,应同期观测不少于两次,取平均值作为()。
用标准分路电阻线在轨面上短路时,轨道继电器应可靠落下。标准分路电阻线的电阻值有()。
纤毛不动综合征是指患者的___、____、___和_____的粘膜纤毛上皮细胞缺乏活动能力,丧失清除细菌的能力,故反复发作的鼻炎、鼻窦炎,不会引起气管炎、支气管炎、中耳炎。
ZPW-2000轨道电路室外电缆应连接在匹配变压器的V1-V2端子上。
凡不符合要求或违反购销合同发货的不能办理托收承付业务,审查时间最长不得超过()。
制动夹板与轮间的摩擦系数不影响减速器的制动能力。
下列概念中,“颈脊髓损伤引起四肢运动、感觉功能障碍”属于()
真性球麻痹与假性球麻痹如何鉴别?
突出主景的方法有()。
下列不是胆腑名称的是()
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The emergency bilge suction or bilge () is used to prevent flooding of the ship.
The emergency bilge suction or bilge () is used to prevent flooding of the ship.
The emergency bilge suction or bilge injection valve is used to prevent () of th...
The emergency bilge suction or bilge injection valve is used to prevent () of th...
The emergency bilge suction valve is typically used ().
The emergency bilge suction valve is typically used ().
An independent bilge suction is required for ().
An independent bilge suction is required for ().
The ()pump is usually used as the emergency bilge pump.
The ()pump is usually used as the emergency bilge pump.