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【判断题】
jdk是IDE的一种A.
正确
B.
错误
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反馈参考答案：
举一反三
【多选题】以下试剂能作为基准物质的是
A.
优级纯的Na 2 B 4 O 7 •10H 2 O
B.
99.99%的纯锌
C.
105-110℃烘干2h的Na 2 C 2 O 4
D.
NaOH
【单选题】It_____________you 30 minutes to take a coach there and it_________less than 6$. A.takes, spends B.takes, costs C.costs, spends D.spends, costs
A.
.takes, spends
B.
.takes, costs
C.
costs, spends
D.
spends, costs
【单选题】以下试剂能作为基准物质的是
A.
100 ～ 110 ℃ 干燥的 Na 2 CO 3
B.
优级纯的 KOH
C.
100 ～ 110 ℃ 干燥的 K 2 Cr 2 O 7
D.
优级纯的 Na 2 B 4 O 7 ∙5H 2 O
【单选题】听力原文：W: What's Wendy doing here today? I thought she was supposed to be out of the office on Tuesdays. M: She decided she'd rather have Wednesdays off instead. Q: What can we learn about Wendy from th...
A.
She has changed her schedule.
B.
She works less than she used to.
C.
She is going to ask for a leave on Wednesday.
D.
She is going to have her vacation on Tuesday.
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