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【单选题】
临床应用最广、效果最为可靠的灭菌法是
A.
燃烧法
B.
煮沸法
C.
压力蒸气灭菌法
D.
高效化学消毒剂浸泡法
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参考答案：
举一反三
【判断题】( )氟里昂是以前常用的冷冻剂,它一般不会污染环境。
A.
正确
B.
错误
查看完整题目与答案
【单选题】During compressors running the accumulated moisture in the separators must be _____.
A.
drained off
B.
collected
C.
sent to the crankcases
D.
separated with oil
查看完整题目与答案
【多选题】在“药品生产验证指南”中,将验证分为()
A.
前验证
B.
回顾性验证
C.
再验证
D.
同步验证
E.
产品验证
查看完整题目与答案
【单选题】有些人煮稀饭为了增加其黏稠度而加碱,这种烹调方法损失最多的营养素是( )
A.
蛋白质
B.
脂肪
C.
糖类
D.
维生素
E.
无机盐
查看完整题目与答案
【单选题】By far the greatest item of maintenance of the reciprocating air compressors concerns _____.
A.
the lubrication
B.
the cooling
C.
the moisture separation
D.
the valves
查看完整题目与答案
【简答题】During operation, gas enters a centrifugal compressor at the suction inlet and isaccelerated radially by moving ________ . Centrifugal compressors haveone moving element, the _____ and ______.
查看完整题目与答案
【简答题】Compressors differ from pumps in that pumps move ______ and compressors move ______ .
查看完整题目与答案
【单选题】Which of the following statements is true concerning the overall efficiency of air compressors?
A.
High pressure compressors are more efficient than low pressure compressors
B.
Mechanical efficiency divided by compressor efficiency will equal the overall efficiency of the compressor unit
C.
Two stage compressors are generally more efficient than single stage compressors.
D.
The volumetric efficiency is decreased in multistage compressors
查看完整题目与答案
【单选题】Air compressors are equipped with unloading systems for the purpose of _____.
A.
removing all but the frictional load during starting
B.
relieving intercoolers of high temperature buildups
C.
providing high starting torque in the drive motor
D.
seating valve plates during compressor shutdown
查看完整题目与答案
【单选题】下列四个选项是对皮亚杰个体思维发展理论的叙述和评价，其中不正确的一项是()．
A.
阶段出现的先后顺序固定不变，每一阶段都有其独特的图式或认知结构
B.
图式或认知结构的发展是一个连续建构的过程
C.
皮亚杰将思维发展的过程分为四个阶段的顺序是：感知一动作阶段、前运算阶段、形式运算阶段、具体运算阶段
D.
现在有些心理学家对皮亚杰的思维发展理论的某些观点存在质疑
查看完整题目与答案
相关题目：
【判断题】( )氟里昂是以前常用的冷冻剂,它一般不会污染环境。
A.
正确
B.
错误
查看完整题目与答案
【单选题】During compressors running the accumulated moisture in the separators must be _____.
A.
drained off
B.
collected
C.
sent to the crankcases
D.
separated with oil
查看完整题目与答案
【多选题】在“药品生产验证指南”中,将验证分为()
A.
前验证
B.
回顾性验证
C.
再验证
D.
同步验证
E.
产品验证
查看完整题目与答案
【单选题】有些人煮稀饭为了增加其黏稠度而加碱,这种烹调方法损失最多的营养素是( )
A.
蛋白质
B.
脂肪
C.
糖类
D.
维生素
E.
无机盐
查看完整题目与答案
【单选题】By far the greatest item of maintenance of the reciprocating air compressors concerns _____.
A.
the lubrication
B.
the cooling
C.
the moisture separation
D.
the valves
查看完整题目与答案
【简答题】During operation, gas enters a centrifugal compressor at the suction inlet and isaccelerated radially by moving ________ . Centrifugal compressors haveone moving element, the _____ and ______.
查看完整题目与答案
【简答题】Compressors differ from pumps in that pumps move ______ and compressors move ______ .
查看完整题目与答案
【单选题】Which of the following statements is true concerning the overall efficiency of air compressors?
A.
High pressure compressors are more efficient than low pressure compressors
B.
Mechanical efficiency divided by compressor efficiency will equal the overall efficiency of the compressor unit
C.
Two stage compressors are generally more efficient than single stage compressors.
D.
The volumetric efficiency is decreased in multistage compressors
查看完整题目与答案
【单选题】Air compressors are equipped with unloading systems for the purpose of _____.
A.
removing all but the frictional load during starting
B.
relieving intercoolers of high temperature buildups
C.
providing high starting torque in the drive motor
D.
seating valve plates during compressor shutdown
查看完整题目与答案
【单选题】下列四个选项是对皮亚杰个体思维发展理论的叙述和评价，其中不正确的一项是()．
A.
阶段出现的先后顺序固定不变，每一阶段都有其独特的图式或认知结构
B.
图式或认知结构的发展是一个连续建构的过程
C.
皮亚杰将思维发展的过程分为四个阶段的顺序是：感知一动作阶段、前运算阶段、形式运算阶段、具体运算阶段
D.
现在有些心理学家对皮亚杰的思维发展理论的某些观点存在质疑
查看完整题目与答案
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