单选题The principal personnel hazard unique to Halon extinguishers is（）.Adisplacement of oxygenBskin irritationCinhaling toxic vaporsDeye irritation
单选题
The principal personnel hazard unique to Halon extinguishers is（）.
A
displacement of oxygen
B
skin irritation
C
inhaling toxic vapors
D
eye irritation
参考解析
解析：
暂无解析
相关考题：
73/78防污公约附则Ⅵ对船舶使用消耗臭氧层物质规定，船上可能有的"消耗臭氧层物质"包括但不限于下列各项______。Ⅰ.Halon1211;Ⅱ.Halon1301;Ⅲ.Halon2402;Ⅳ.CFC-11;Ⅴ.CFC-12;Ⅵ.CFC-113;Ⅶ.CFC-114;Ⅷ.CFC-115。A.Ⅰ+Ⅱ+ⅢB.Ⅳ+ⅤC.Ⅵ+Ⅶ+Ⅶ+ⅧD.以上全部
When will the fire department come to conduct a fire prevention inspection in our company?A. Next month. I’ve checked hydrants and fire-extinguishers on each floorB.Next day. The manager will check hydrants and other equipment in the building.C.Next week. But hydrants and fire extinguishers on each floor has already been checkedD.The day before yesterday. I had already checked hydrants and fire extinguishers on each floor.
听力原文：There are primarily three principal parties involved: the trustor, the beneficiary and the trustee.(8)A．The trustor, the beneficiary and the settlor are primarily three principal parties.B．The trustor, the beneficiary and the trustee are primarily three principal parties.C．The trustor, the beneficiary and the grantor are primarily three principal parties.D．The trustor, the beneficiary and the donor are primarily three principal parties.
某企业的数据库系统中有如下所示的员工关系和仓库关系，每个仓库可有多名员工，但只有一名负责人。员工关系(employee)：仓库关系(warehouse)：则创建仓库表结构的SQL语句为(58)。A．CREATE TABLE (employee ID CHAR(2)NOTNULL UNIQUE， name CHAR(30)NOT NULL， address CHAR(40)， principal ID CHAR(3))；B．CREATE warehouse(warehouse ID CHAR(2)PRIMARY KEY， name CHAR(30)， address CHAR(40)， principal ID CHAR(3))；C．CREATE TABLE warehouse(warehouse ID CHAR(2)PRIMARY KEY， name CHAR(30)NOT NULL， address CHAR(40)， principal ID CHAR(3)， FOREIGN KEY(principal ID)REFERENCES employee(employee ID))；D．CREATE TABIE warehouse(warehouse ID CHAR(2)， name CHAR(30)NOT NULL， address CHAR(40)， principal ID CHAR(3)， PRIMARY REY(warehouse ID)， FOREIGN KEY(employee ID)REFERENCES employee(employee ID))；
You are cleaning the tanks after carrying a cargo of crude oil. Which statement is TRUE?A.Washing water should be recirculated if possible because it has the same electric potential as the cargo tank being cleanedB.The hoses to portable cleaning machines should be disconnected before the machines are removed from the tankC.The principal hazard with steaming cargo tanks is raising the ambient temperature above the flame point of the cargo residueD.Steam cleaning and water washing are both capable of generating electrostatic charges within a tank
CO2 and Halon extinguishers are used for electrical fire, as well as （）fire.A、commonB、oilC、electricalD、chemical
最基本的保护层是油漆。（）A、The principal protective coating is paint.B、The principal protective coating is cement wash.C、The principal protective coating is bitumen.D、The principal protective coating is varnish.
单选题Halon fire extinguishers are NOT effective when used on which types of fires?（）AFires in electrical equipmentBFlammable oils and greasesCClass A fires in ordinary combustiblesDMaterials containing their own oxygen
单选题How can vessel personnel detect the operation of a SART in its vicinity?（）AA unique radar signal consisting of a blip code radiating outward from a SART's position along its line of bearingBA unique two tone warbling signal heard on VHF-FM ch-70CA unique two tone alarm signal heard upon the automatic unmuting of the 2182 kHz radiotelephone automatic watch receiverDThe SART signal appears as a target which comes and goes; the effect of heavy swells on the SART
单选题You are cleaning the tanks after carrying a cargo of crude oil. Which statement is TRUE? （）AWashing water should be recirculated if possible because it has the same electric potential as the cargo tank being cleanedBThe hoses to portable cleaning machines should be disconnected before the machines are removed from the tankCThe principal hazard with steaming cargo tanks is raising the ambient temperature above the flame point of the cargo residueDSteam cleaning and water washing are both capable of generating electrostatic charges within a tank
单选题最基本的保护层是油漆。（）AThe principal protective coating is paint.BThe principal protective coating is cement wash.CThe principal protective coating is bitumen.DThe principal protective coating is varnish.
单选题73/78防污公约附则Ⅵ对船舶使用消耗臭氧层物质规定，船上可能有的"消耗臭氧层物质"包括但不限于下列各项（）。 Ⅰ．Halon1211； Ⅱ．Halon1301； Ⅲ．Halon2402； Ⅳ．CFC-11； Ⅴ．CFC-12； Ⅵ．CFC-113； Ⅶ．CFC-114； Ⅷ．CFC-115。AⅠ＋Ⅱ＋ⅢBⅣ＋ⅤCⅥ＋Ⅶ＋Ⅶ＋ⅧD以上全部
单选题Fire extinguishers of sizes III，IV，and V are designated as（）.AportableBsemi-portableCfixedDdisposable
单选题Halon extinguishes a fire by（）.Abreaking the chain reactionBsmothering the fireCcooling the fireDcoating the fuel with a nonflammable surface
单选题Halon extinguishers used on a class C fire should be directed at the（）.Abase of the equipmentBtop of the equipmentCpower sourceDsource of the fire
单选题Halon extinguishes fire primarily by（）.AcoolingBsmotheringCshielding of radiant heatDbreaking the chain reaction
单选题Halon from extinguishers used on a class B fire，should be directed（）.Aat the top of the flamesBat the base of the fire near the edgeCin short quick burstsDtoward the upwind side of the fire
单选题We are looking for a Principal Economist, who as well as advising managers and board members on environmental economic policy matters, will develop policy relating to cost benefit analysis at the upcoming review and beyond.AThe Principal Economist will become a board member.BThe Principal Economist will deal with environmental matters.CThe Principal Economist’s major responsibility is to make certain policy.
单选题Which statement is TRUE concerning spare charges for portable fire extinguishers on unmanned tank barges?（）.ASpare charges shall be carried for at least 50 percent of each size and variety required on boardBIf the unit cannot be charged by the vessel's personnel，one spare unit shall be carried in lieu of spare chargesCSpare charges shall be stowed in watertight containers on deckDRegulations concerning spare charges do not apply to unmanned barges