皮皮学，免费搜题
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【单选题】
“世界无烟日”是哪天?
A.
5月30日
B.
5月31日
C.
6月31日
D.
12月30日
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参考解析：
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举一反三
【单选题】Sludge may form in the crankcase of an air conditioning compressor as a result of ______.
A.
bubbling refrigerant
B.
overheating and oxidation
C.
lowered operating temperatures
D.
reducing the cloud or floc point
查看完整题目与答案
【单选题】Sludge may be formed in the oil in the crankcase of a reciprocating air conditioning compressor as a result of （）
A.
refrigerant bubbles in the lube oil
B.
refrigerant reducing the lube oil viscosity
C.
oxidation of the lube oil from overheating
D.
reducing the floc or cloud point of the oil
查看完整题目与答案
【多选题】歇山顶是( )的结合，由一条正脊、四条垂脊、四条俄脊组成，又称九脊顶。
A.
庑殿顶
B.
悬山顶
C.
硬山顶
D.
攒尖顶
E.
盝顶
查看完整题目与答案
【单选题】The lengthening of a crack formed in the shell plating of a ship may be prevented by _____.
A.
welding brackets across both ends of the crack
B.
chipping out and slot welding the entire crack
C.
drilling a hole at each end of the crack
D.
cutting a square notch at each end of the crack
查看完整题目与答案
【单选题】Which harmful consequence may be the result of lube oil sludge accumulation? .
A.
Clogged oil pump suction screens
B.
Increased oil operating temperatures
C.
Sticking piston rings
D.
All of the above
查看完整题目与答案
【判断题】歇山顶是由一条正脊、四条垂脊、和四条戗脊组成,又称为九脊顶。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Sludge may form. in the lubricating oil crankcase of a reciprocating air conditioning compressor as a result of ______.
A.
wax precipitation in the lube oil
B.
contamination by dust, scale, or moisture
C.
refrigerant bubbles in the lube oil
D.
refrigerant reducing the lube oil viscosity
查看完整题目与答案
【单选题】Sludge may be formed in the oil in the crankcase of a reciprocating air conditioning compressor as a result of_____.
A.
refrigerant bubbles in the Iube oil
B.
refrigerant reducing the lube oil viscosity
C.
oxidation of the lube oil from overheating
D.
reducing the floc or cloud point of the oil
查看完整题目与答案
【单选题】会展新立题材的优点有
A.
筹备工作便于开展
B.
市场号召力较强
C.
开发新的专业观众
D.
拓展新的投资空间
查看完整题目与答案
【单选题】Sludge may be formed in the oil in the crankcase of a reciprocating air conditioning compressor as a result of ______.
A.
refrigerant bubbles in the lube oil
B.
refrigerant reducing the lube oil viscosity
C.
oxidation(氧化) of the lube oil from overheating
D.
reducing the floc or cloud point of the oil
查看完整题目与答案
相关题目：
【单选题】Sludge may form in the crankcase of an air conditioning compressor as a result of ______.
A.
bubbling refrigerant
B.
overheating and oxidation
C.
lowered operating temperatures
D.
reducing the cloud or floc point
查看完整题目与答案
【单选题】Sludge may be formed in the oil in the crankcase of a reciprocating air conditioning compressor as a result of （）
A.
refrigerant bubbles in the lube oil
B.
refrigerant reducing the lube oil viscosity
C.
oxidation of the lube oil from overheating
D.
reducing the floc or cloud point of the oil
查看完整题目与答案
【多选题】歇山顶是( )的结合，由一条正脊、四条垂脊、四条俄脊组成，又称九脊顶。
A.
庑殿顶
B.
悬山顶
C.
硬山顶
D.
攒尖顶
E.
盝顶
查看完整题目与答案
【单选题】The lengthening of a crack formed in the shell plating of a ship may be prevented by _____.
A.
welding brackets across both ends of the crack
B.
chipping out and slot welding the entire crack
C.
drilling a hole at each end of the crack
D.
cutting a square notch at each end of the crack
查看完整题目与答案
【单选题】Which harmful consequence may be the result of lube oil sludge accumulation? .
A.
Clogged oil pump suction screens
B.
Increased oil operating temperatures
C.
Sticking piston rings
D.
All of the above
查看完整题目与答案
【判断题】歇山顶是由一条正脊、四条垂脊、和四条戗脊组成,又称为九脊顶。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Sludge may form. in the lubricating oil crankcase of a reciprocating air conditioning compressor as a result of ______.
A.
wax precipitation in the lube oil
B.
contamination by dust, scale, or moisture
C.
refrigerant bubbles in the lube oil
D.
refrigerant reducing the lube oil viscosity
查看完整题目与答案
【单选题】Sludge may be formed in the oil in the crankcase of a reciprocating air conditioning compressor as a result of_____.
A.
refrigerant bubbles in the Iube oil
B.
refrigerant reducing the lube oil viscosity
C.
oxidation of the lube oil from overheating
D.
reducing the floc or cloud point of the oil
查看完整题目与答案
【单选题】会展新立题材的优点有
A.
筹备工作便于开展
B.
市场号召力较强
C.
开发新的专业观众
D.
拓展新的投资空间
查看完整题目与答案
【单选题】Sludge may be formed in the oil in the crankcase of a reciprocating air conditioning compressor as a result of ______.
A.
refrigerant bubbles in the lube oil
B.
refrigerant reducing the lube oil viscosity
C.
oxidation(氧化) of the lube oil from overheating
D.
reducing the floc or cloud point of the oil
查看完整题目与答案