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【单选题】
下列不属于湿热灭菌法的是( )A.
热压灭菌法
B.
煮沸灭菌法
C.
微波灭菌法
D.
流通蒸汽灭菌法
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举一反三
【简答题】星球探索机器人多采用 操作模式。
【单选题】“Of course, the rivers and valleys and borders were long ago mapped; our blank spaces are the few remaining holes in the global communications network. ... But quite soon those gaps will be filled.” T...
A.
cheerful
B.
dishearted
C.
sympathetic
D.
optimistic
【简答题】已知 z 1 = m 2 - 3 m + m i , z 2 = 4 + (5 m + 4)i ,其中 m ∈ R , i 为虚数单位,若 z 1 = z 2 ,则 m 的值为 ________ .
【简答题】已知复数z=（2m 2 +3m-2）+（m 2 +m-2）i，（m∈R）根据下列条件，求m值． （1）z是实数； （2）z是虚数； （3）z是纯虚数； （4）z=0．
【简答题】已知命题P：复数z 1 =3-3i，复数 z 2 = m 2 -4m-10 m+2 +( m 2 -2m-12)i，(m∈R) ，z 1 +z 2 是虚数；命题Q：关于x的方程2x 2 -4（m-1）x+m 2 +7=0的两根之差的绝对值小于2．若P∧Q为真命题，求实数m的取值范围．
【单选题】已知z 1 =m 2 -3m+m 2 i,z 2 =4+(5m+6)i,其中m为实数,若z 1 -z 2 =0,则m的值为( )
A.
4
B.
-1
C.
6
D.
0
【简答题】Of course, the rivers and valleys and borders were long ago mapped; our blank spaces are the few remaining holes in the global communications network.自然,河流、山谷和边疆许久之前就已经___地图上了,今天我们说的___是指全球通讯网络中仅剩的几个_...
【单选题】Of course, the rivers and valleys and borders were long ago mapped; our blank spaces are the few remaining holes in the global communications network. ... But quite soon those gaps will be filled. (Pa...
A.
cheerful
B.
sympathetic
C.
disheartened
D.
optimistic
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