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【单选题】
按药典规定 , 精密标定的滴定液 ( 如氢氧化钠及其浓度 ) 正确表示为 ( )A.
氢氧化钠滴定液 (0.1520M )
B.
氢氧化钠滴定液 (0.1524mol/L )
C.
氢氧化钠滴定液 (0.1520M/L)
D.
0.1520M 氢氧化钠滴定液
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举一反三
【单选题】I haven’t seen you for ages. How are you ______ with your English study?
A.
holding on
B.
going on
C.
keeping on
D.
getting on
【简答题】TTL具有开关速度较()、带负载能力较(),其体积()、可靠性()
【单选题】I haven’t seen you for so long. How have you been?
A.
Not bad.
B.
Excuse me.
C.
Nice to meet you too.
D.
Thank you.
【单选题】—I haven’t seen you for ages. Where have you been? — I _______ on leave in Europe.
A.
have been
B.
am
C.
was
D.
had been
【单选题】听力原文：M: Where did you get that rare book? I haven’t seen you read it before. W: It was packed away until last week. It’s a family heirloom. Q: What do we learn about the rare book? (18)
A.
It has been in her family a long time.
B.
Her boyfriend gave it to her.
C.
The family doesn't like it.
D.
It is a family disgrace.
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