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【简答题】
In the figure below, the set pressure of the relief valve is 5MPa, the set pressure of the pressure reducing valve is 2.5MPa, and the piston area of the cylinder is 50cm 2 . When the load is 0kN, 7.5kN and 30kN, please answer the following questions: (1) Could the hydraulic cylinder be pushed? (2) What is the pressure value of point A, B and C?
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举一反三
【简答题】He/She mentions that jokes can be useful in context.
【多选题】Why did Amy take up economics?
A.
She was interested in it,
B.
She felt it useful.
C.
She was advised to take it.
D.
She was forced to take it.
【简答题】A．She thinks they are impractical. B．She thinks they are useful but too expensive. C．She thinks they are feasible. D．She thinks they are not instructive enough.
【多选题】Why did Amy take up economics?A．She was interested in it,B．She felt it useful.###
A.
Why did Amy take up economics? A．She was interested in it,
B.
She felt it useful.
C.
She was advised to take it.
D.
She was forced to take it.
【简答题】妈妈炖了一锅鸡汤，先用小勺舀了一点尝尝味道，这是利用了______的思想．
【单选题】_____ you have offered her! She is out of trouble now. [ ]
A.
What useful advice
B.
What a useful advice
C.
How a useful advice
D.
How useful advice
【单选题】患者,女，52岁，因乙肝、黄疸入院，经过治疗出院后，护士在对该患者进行终末消毒处理时，下列操作不正确的是
A.
嘱患者洗澡后将换下的衣服装好并带回清洗
B.
病室的地面用含氯石灰液喷洒
C.
家具用0.2%〜0.5%过氧乙酸溶液擦拭
D.
患者使用过的床单消毒后，送洗衣房清洗
E.
病室用2%过氧乙酸溶液熏蒸
【简答题】炒熟的甜杏仁
【单选题】She is ________ new comer to ________ physics but she has made some useful inventions already
A.
the, the
B.
the, /
C.
a, /
D.
a, the
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