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【单选题】
现代汽车空调系统采用的制冷剂是A.
R12
B.
R22
C.
R134a
D.
R21
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【单选题】旅客列车和车站应配备为旅客服务的“急救药箱”,用药由( )负责,按规定内容定量及时配备。指定经过训练的专人管理,并建立旅客用药登记簿。
A.
卫生防疫部门
B.
客运部门
C.
铁路医院(或保健站)
D.
车站;
【简答题】A good modern newspaper is an extraordinary piece of reading. It is unusual for what it contains: the news from local crime to international politics, from sports to business to fashion to science, an...
【单选题】A positive effect of detox diets is that it helps people to see what foods are good for their health.
A.
Right
B.
Wrong
C.
Not mentioned
【简答题】定义 C# 变量的格式如:数据____ 变量名称。
【单选题】It was the training _____ he had as a young man _____ made him such a good engineer.
A.
what; that
B.
that; what
C.
that; which
D.
which; that
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