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【单选题】
血清、抗生素等常用下列哪种方法除菌A.
加热56℃ 30min
B.
紫外线照射
C.
滤菌器过滤
D.
高压蒸气灭菌
E.
消毒法
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举一反三
【单选题】He is very busy. I don’t know if he _____ or not tomorrow.
A.
come
B.
comes
C.
will come
D.
is coming
【简答题】Robots are less popular in Britain today partly because ________.
【简答题】完形填空。 Peter is a waiter. He 1 in a restaurant. He is very busy, so he gets 2 very late every night. He does not stay at home 3 the day. Peter has a parrot (鹨鹉) at home. Its name is Dora. It is a beaut...
【单选题】Although he is very busy every day as manager of the company, he spends as much time as he can ___ with his family.
A.
stays
B.
stay
C.
to stay
D.
staying
【多选题】学生关系模式为 Student(Sno, Sname, Sgrade, Sdept, Sid, Smobilephone, Scardno) ,其中,S no 表示学号, Sname 表示姓名, Sex 表示性别, Sgrade 表示年级, Sdept 表示系名, Sid 表示身份证号, Smobilephone 表示手机号码, Scardno 表示图书证号。假设属性 Sgrade 、 Sdept...
A.
Sno
B.
Sname
C.
Sdept
D.
Sgrade
E.
Sid
F.
Smobilephone
G.
Scardno
【简答题】A．Mostly B．Totally C．Nearly D．Partly
【简答题】A．She knows he is very busy. B．He's already helped her enough. C．He is incompetent to help her. D．She doesn't need any help.
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