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【简答题】
植物遗传变异的特点,遗传是相对________的,而变异则是__ _____存在的。
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【单选题】jump与青霉素G比较,氨苄西林的抗菌特点是
A.
jump耐青霉素酶
B.
jump广谱
C.
jump对铜绿假单胞杆菌有效
D.
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【单选题】单选蓝光与黄光是互补光。当一辆蓝色汽车进入黄光照明的隧道时,观察到的该车颜色可能是( )
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【单选题】滑动轴承材料应有良好的嵌藏性是指 ________ 。
A.
摩擦系数小
B.
容纳硬污粒以防磨粒磨损
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【多选题】(多选)由机械束缚引起的种子休眠的破除方法有( )。
A.
切割种皮
B.
层积处理
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【单选题】Here, so extravagant and wasteful has its use become the air conditioner is almost as glaring symptom as the automobile of the national tendency to overindulge in every technical possibility, to sue e...
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almost as glaring a symptom as
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almost as glaring symptoms as
C.
nearly as glaring as a symptom
D.
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【判断题】所示结构 B 支座反力等于 P/2 ，方向为竖直向上()
A.
正确
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【单选题】以一台计算机设备作为中心结点,其他计算机均与之相连的网络拓扑结构是 ()。
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环型结构
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总线结构
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树型结构
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【简答题】完形填空 Every country has its own dining customs. Americans feel that the first rule of being a 1 guest is to be on time. If a person is invited to dinner at six thirty,the hostess 2 him to be there at s...
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【简答题】Every country has its different customs when visiting other people's homes for a dinner party. It's important to know these before visiting a foreign country, so that you can avoid embarrassing...
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【多选题】(多选)由机械束缚引起的种子休眠的破除方法有( )。
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【单选题】Here, so extravagant and wasteful has its use become the air conditioner is almost as glaring symptom as the automobile of the national tendency to overindulge in every technical possibility, to sue e...
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【判断题】所示结构 B 支座反力等于 P/2 ，方向为竖直向上()
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【单选题】以一台计算机设备作为中心结点,其他计算机均与之相连的网络拓扑结构是 ()。
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