装置外购解吸剂纯度的要求为（）。A.解吸剂纯度＞95wt% B.解吸_爱下问搜题

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问题单项选择题

装置外购解吸剂纯度的要求为（）。

A.解吸剂纯度＞95wt%

B.解吸剂纯度＞98wt%

C.解吸剂纯度≥98wt%

D.解吸剂纯度≥95wt%

答案

参考答案：C

选择题

选出不同类的一项。

( ) 1. A. funny
( ) 2. A. math
( ) 3. A. Monday
( ) 4. A. she
( ) 5. A. very

B. smart
B. thin
B. have
B. he
B. tall

C. Tuesday
C. Chinese
C. Tuesday
C. I
C. thin

D. active
D. English
D. Thursday
D. and
D. short

选择题

My parents asked me _____ letting off fireworks.

[ ]

A. not to be careful with

B. be careful with

C. careful with

D. to be careful with