皮皮学，免费搜题
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【多选题】
影响消费者购买的社会因素通常包括( )A.
社会阶层
B.
相关群体
C.
家庭
D.
年龄
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
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皮皮学刷刷变学霸
举一反三
【单选题】When a waste heat boiler is installed in the exhaust of a main propulsion diesel engine, the exhaust gas bypass would be used _____.
A.
at high loads to prevent overheating
B.
at low loads to prevent corrosion in the boiler
C.
during periods of high steam demand
D.
when the turbocharger is in operation
【单选题】When would the available energy of the exhaust gases of a two-stroke/cycle diesel engine be insufficient to drive an exhaust gas turbocharger, resulting in the incorrect amount of air for combustion?（...
A.
During operation at low speed
B.
During operation at rated speed, but low power output
C.
During acceleration
D.
All of the above
【简答题】设有40件产品,其中有4件次品,从中不放回的任取10次,每次取1件,则最后一件取得为次品的概率为
【单选题】When the _______in the cylinder burns, the temperature rises and the fuel is converted to exhaust gas.
A.
which
B.
lubrication
C.
oil
D.
fuel/air mixture
【单选题】A ____arrangement permits steam generation either by oil firing when the exhaust gas temperature falls due to slow running of the engines or exhaust gas cease when the engines are stopped or by using ...
A.
water tube boiler
B.
fire tube boiler
C.
composite boiler
D.
auxiliary boiler
【单选题】When a waste heat boiler is installed in the exhaust of a main propulsion diesel engine, the exhaust gas bypass would be used _____.(与0805题重复)
A.
at high loads to prevent overheating
B.
at low loads to prevent corrosion in the boiler
C.
during periods of high steam demand
D.
when the turbocharger is in operation
【简答题】设有40件产品,其中有4件次品,从中不放回的任取10次,每次取一件,则最后一件取得为次品的概率是____.
【单选题】Cross scavenging requires the fitting of （） to prevent air or exhaust gas escape when the piston is at the top of the stroke.
A.
a exhaust valve
B.
a piston skirt
C.
a piston crown
D.
an air suction valve
【单选题】关于致意的礼仪规范描述错误的是（ ）。
A.
如果头戴的是无檐帽不必脱帽致意
B.
举手致意适合于距离较远的情况
C.
女士无论什么场合，年龄大小，不论是否戴帽，只需点头致意或微笑致意
D.
微笑致意适合于长辈、领导或会议等人较多的场合
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