When operating with a negative suction head, which of the following types of pumps will require priming?（）..

第1题

[] When does auxiliary burner of incinerator put into operation? （） Ⅰ. start incinerator when it is cold Ⅱ. the sludge for dealing with is little Ⅲ. the sludge for dealing with is large Ⅳ. the water and impurity in sludge are too much Ⅴ. the temperature in incinerator is low Ⅵ. dealing with little solid rubbish When does auxiliary burner of incinerator put into operation? （） Ⅰ. start incinerator when it is cold Ⅱ. the sludge for dealing with is little Ⅲ. the sludge for dealing with is large Ⅳ. the water and impurity in sludge are too much Ⅴ. the temperature in incinerator is low Ⅵ. dealing with little solid rubbish

A、A.Ⅰ+Ⅱ+Ⅲ+Ⅴ B、B.Ⅰ+Ⅱ+Ⅲ+Ⅳ C、C.Ⅰ+Ⅳ+Ⅴ+Ⅵ D、D.Ⅰ+Ⅱ+Ⅲ+Ⅵ

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第2题

[单选题] You are creating a Windows Communication Foundation (WCF) service that implements operations in a RESTful manner. You need to add a delete operation. You implement the delete method as follows:void DeleteItems(string id);You need to configure WCF to call this method when the client calls the service with the HTTP DELETE operation. What should you do?（）

A、Add the WebInvoke(UriTemplate="/Items/{id}", Method="DELETE") attribute to the operation B、Add the HttpDelete atribute to the operation C、Replace the string parameter with a RemovedActivityAction parameter D、Replace the return type with RemovedActivityAction.

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第3题

[单选题] Dual electro-hydraulic steering units usually operate （）.

A、with both pumps on line at the same time B、with one pump on standby C、with the follow-up gear disconnected D、only when the rudder is moved amidships

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第4题

[单选题] When does auxiliary burner of incinerator put into operation? （） Ⅰ.tart incinerator when it is cold Ⅱ.he sludge for dealing with is little Ⅲ.he sludge for dealing with is large Ⅳ.he water and impurity in sludge are too much Ⅴ.he temperature in incinerator is low Ⅵ.ealing with little solid rubbish

A、Ⅰ+Ⅱ+Ⅲ+Ⅴ B、Ⅰ+Ⅱ+Ⅲ+Ⅳ C、Ⅰ+Ⅳ+Ⅴ+Ⅵ D、Ⅰ+Ⅱ+Ⅲ+Ⅵ

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第5题

[单选题] The prohibition against displaying lights which may be confused with required navigation lights applies（）.

A、from sunset to sunrise and during restricted visibility B、only when other vessels are in the area C、only when operating in a traffic separation scheme D、only when under tow

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第6题

[单选题] When ship navigating in rough sea, the correct operation is （）

A、navigating with a low diesel engine speed B、navigating with a stable diesel engine speed C、increasing the efficiency of propeller D、increasing fuel injection

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第7题

[单选题] Be carefully when you（）the derrick.

A、operate B、operating C、operated D、operates

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第8题

[单选题] Be careful when you （）the derrick.

A、operated B、operate C、operating D、operator

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第9题

[单选题] The quality of the fuel oil and lube oil （）, Im afraid.

A、has much to do with the operation of the engine and its life B、have much to do with the operation of the engine and its life C、has much doing with the operation of the engine and its life D、have much doing with the operation of the engine and its life

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When operating with a negative suction head, which of the following types of pumps will require priming?（）

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