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【多选题】
以下需要肠道隔离的疾病是( )A.
脊髓灰质炎
B.
脑膜炎
C.
腮腺炎
D.
SARS
E.
流脑
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【单选题】Tom, turn down the music. Why _____ you make such a big noise while your baby sister is sleeping? [ ]
A.
must
B.
would
C.
should
D.
may
【单选题】--- Why? Tom, your shirt is so dirty! --- Mum, I ______ my storeroom downstairs.
A.
cleaned
B.
have cleaned
C.
was cleaning
D.
have been cleaning
【单选题】1mol/L HAc 溶液中 HAc 的 α = 1.33% , 则 [H + ] 为: ( ) mol/l.
A.
1.33× 10 -3
B.
1.33× 10 -2
C.
1.33× 10 -1
D.
1.33
【单选题】—— Why? Tom, your shirt is so dirty! —— Mum, I ＿＿＿＿＿ my storeroom downstairs。
A.
cleaned
B.
have worked
C.
was cleaning
D.
have been cleaning
【单选题】Tom, turn down the music. Why ____ you make such a big noise while your baby sister is sleeping? [ ]
A.
could
B.
would
C.
should
D.
must
【单选题】1mol/lHAc 溶液中 HAc 的 α = 1.33%, 则 [H+] 为( ) mol/l.
A.
1.3 3×10 -3
B.
1.33×10 -2
C.
1.33×10 -1
D.
1.33
【单选题】根据培养基的物理性状不同，可分为
A.
透明培养基，半透明培养基，不透明培养基
B.
液体培养基，半固体培养基，固体培养基
C.
固体培养基，无色培养基，有色培养基
D.
液体培养基，无色培养基，有色培养基
E.
液体培养基，半透明培养基，固体培养基
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