皮皮学,免费搜题
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搜题
【单选题】
判定致病性葡萄球菌的主要试验是
A.
甘露醇发酵
B.
血浆凝固酶试验
C.
明胶液化
D.
触酶试验
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【单选题】Don’t miss this ____ . It may never come again.
A.
opportunity
B.
skill
C.
book
D.
talking
【简答题】enthusiasm congratulate anniversary amazing proud pretend opportunity be admitted to jump for joy promotion success 7. Don’t miss this _____________, it may never come again.
【单选题】下列有关生物安全柜的实验操作中,不正确的是()
A.
手臂应缓慢移动,避免影响正常的气流
B.
尽量避免将离心机、漩涡振荡器等仪器安装在柜内
C.
柜内尽量不要使用明火
D.
处理不同标本时,因柜内有垂直洁净气流,故不用担心标本之间相互污染
E.
在柜内摆放物品时,应尽量呈一字横向摆开
【单选题】下列有关生物安全柜的实验操作中,不正确的是(  )
A.
手臂应缓慢移动,避免影响正常的气流
B.
尽量避免将离心机、旋涡振荡器等仪器安装在柜内
C.
柜内尽量不要使用明火
D.
处理不同标本时,因柜内有垂直洁净气流,故不用担心标本之间相互污染
E.
在柜内摆放物品时,应尽量放在安全柜的中后部
【单选题】_______ you do, don’t miss this exhibition, for it’s so hard for me to get the tickets.
A.
Whatever
B.
However
C.
If
D.
Who
【单选题】下列有关生物安全柜的实验操作中,不正确的是(  )
A.
手臂应缓慢伸入柜内,操作完毕后应缓慢抽出,避免改变气流流向
B.
尽量避免将离心机安装在柜内
C.
柜内尽量不要使用明火
D.
在柜内摆放物品时,应将所有物品摆在一侧,以腾出另一侧进行操作
E.
柜内有两种及以上物品需要移动时,需按照低污染物品向高污染物品移动的原则
【单选题】Mother gave Alice 30 dollars. She spends a fifth of the 30 dollars on books, a quarter of the remainder at a hairdresser's and buys a new skirt for 10 dollars. How many dollars does she have now? ()
A.
15
B.
8
C.
16
D.
9
【简答题】The home has an attached 2-car garage with a shop area. Central A/C & a high efficiency heating unit will keep the home cool in the summer & warm in the winter. Home is located minutes to Dallas City...
【简答题】排序。 (     ) How many kites can you see? (     ) Look at my new kite. (     ) I can see 16. (     ) How nice!
【单选题】_____you do, don’t miss this exhibition, for it’s so hard for me to get the tickets.
A.
Whatever
B.
However
C.
Whenever
D.
Whether
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