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【单选题】
护士更换被血液污染的被服时防护重点是A.
手部皮肤完好，可不戴手套
B.
血液污染面积少时，可不戴手套
C.
戴手套操作，脱手套后认真洗手
D.
未戴手套时，应避免手部被污染
E.
只要操作时戴手套，操作后不需洗手
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【简答题】He had to _______ the mud off his shoes before coming into thehouse. A) scratch B) sc C) strap D) stroke
【单选题】What did Tim's company arrange before he left?
A.
A . a short visit to Dubai before moving there a short visit to Dubai before moving there
B.
a personal contact with the team in Dubai
C.
a language course in Arabi c
【单选题】. Tim, you should briefly ___ the main arguments before the voting.
A.
calculate
B.
identify
C.
observe
D.
summarize
【单选题】Why is Tim Pearson coming along today?
A.
To do an interview.
B.
To plan an interview and some filming of the Museum.
C.
To talk about the Museum and give a talk about money.
D.
To plan an interview and a tour round the Museum.
【简答题】一电阻接在20V的直流电路中产生的功率为2kW,该接到正弦交流电路中消耗的功率为1kW,则交流电源的电压最大值为__________。
【单选题】如图，有N个电量均为q的点电荷，以两种方式分布在相同半径的圆周上，一种是无规则地分布，另一种是均匀分布，比较这两种情况下在过圆心O并垂直于圆平面的z轴上任一点P的场强与电势，则有（）
A.
场强不等，电势不等
B.
场强相等，电势相等
C.
场强分量Ez相等，电势相等
D.
场强分量Ez相等，电势不等
【单选题】_______ for the coming examinations before, I have no time for the film.
A.
Not preparing
B.
To prepare
C.
Having not prepared
D.
Not having prepared
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