放久的馒头会生出“白毛”或“黑毛”,这些霉菌来自( ) A.空气中飘来的孢子 B

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问题:

放久的馒头会生出“白毛”或“黑毛”,这些霉菌来自            (   )

A.空气中飘来的孢子

B.空气中飘来的菌丝

C.面粉中携带的孢子

D.面粉中携带的菌丝

考点:真菌的形态结构和功能真菌的种类真菌的繁殖真菌的生活方式及营养方式
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男性,88岁。尿失禁伴进行性排尿困难。首先应考虑()

A.膀胱炎

B.膀胱癌

C.膀胱结核

D.前列腺炎

E.前列腺增生

题型:选择题

压边圈通常安在哪个摸上?

题型:选择题

According to traditional Cherokee beliefs, we are part of (1) . We don’t (2) with it and we’re not trying to (3) it. We are a part of the Great Life. And within the Great Life, there are three great Laws of Nature, which tell us how we have to live in (4) with everything else. The First Law of Nature is that you don’t take any life without real (5) . So we shouldn’t (6) needlessly. We believe everything is alive, including animals, plants and (7) . And so to us, taking the life of a plant is just as grave a 8() as taking the life of an animal. The Second Law is that everything we do should (9) the Great Life. And everything we do (10) the Great Life, and everything that (11) within the Great Life affects us. So it’s very important that what we do will not (12) other parts of the Great Life. The Third Law basically is that we don’t (13) where we live. And where we live is not our (14) , small community. It’s this (15) . We don’t pour chemical (16) down the drain because they all wind up in the water. It might seem a little difficult to live by those three laws in this (17) society. But there are still a lot of things that we can do to bring these laws into our lives, such as (18) , using the (19) as little as possible, and (20) gardening.

题型:选择题

根据质量守恒定律,下列说法错误的是

A.镁带与其燃烧生成的白色粉末的质量一定不相等

B.在点燃条件下,12g碳与40g氧气恰好完全反应

C.一定条件下分解的水的质量等于其生成的氢气和氧气的质量总和

D.在化学反应: 2XY2+Y2=2C中,C的化学式为XY3

题型:选择题

某企业一台从1999年1月1日开始计提折旧的设备。其原值为15 500元,预计使用年限为5年,预计净残值为500元,采用双倍余额递减法计提折旧。从2001年起,该企业将该固定资产的折旧方法改为平均年限法,设备的预计使用年限由5年改为4年,设备的预计净残值由500元改为300元。该设备2001年的折旧额为( )元。

A.2 540
B.2 640
C.2 232
D.3 348

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