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【简答题】
矿石可选性研究,是一种科学实验活动,对选矿科学和生产的发展具有重大意义。同工业生产相比,它通常具有下列特点 :
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【单选题】听力原文：W：Why can't I make the international direct dial in my room, sir? M：Well, let me have a check. But have you paid the deposit for the telephone charge at the front desk? Q：What does the man sugges...
A.
To dial the right telephone numbers.
B.
To have the telephone repaired.
C.
To open the telephone service of the room.
D.
To remit the money to the bank.
【单选题】How does one make a long distance call to Boston?
A.
First dial 555-2121, next the area code and last the number.
B.
First dial 555-1212, next the city code and last the number.
C.
First dial 555-1212 and then the phone number.
D.
First dial 555-1212, next the area code and last the number.
【简答题】请简要写出美国风湿病学会(ACR)1997年推荐的SLE诊断标准
【单选题】All people who want to make international calls by using the pay phone need to dial the_____code first.
A.
dress
B.
security
C.
country
D.
secret
【简答题】Make sure ______________________ before you dial ;
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