题目:
下列化合物分子中一定既含单键又含双键的是( )
A.C6H6
B.C2H6O
C.COCl2
D.H2O2
答案:
答案:C
A可能是苯,没有单键,也没有双键。B可能是乙醇,没有双键。D是双氧水,没有双键。C是光气,含有碳氧双键和碳氯单键,所以答案选C。
下列化合物分子中一定既含单键又含双键的是( )
A.C6H6
B.C2H6O
C.COCl2
D.H2O2
答案:C
A可能是苯,没有单键,也没有双键。B可能是乙醇,没有双键。D是双氧水,没有双键。C是光气,含有碳氧双键和碳氯单键,所以答案选C。
已知G是△ABC的重心,直线EF过点G且与边AB,AC分别交于E,F,
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已知Q与R的摩尔质量之比为9:22。在反应X + 2Y =" 2Q" + R中,当1.6gX与Y完全反应后,生成4.4g R,则参与反应的Y和生成物Q的质量比为:
A.46:9
B.16:9
C.23:9
D.32:9
Once upon a time a washer man(洗衣工) had two donkeys(毛驴). Let’s say Donkey-A and Donkey-B. Donkey –A felt it was very 36 and could do better than the other. It always tried to 37 more load(担子) and walk fast in front of the washer man. Innocent(无辜的) Donkey-B was 38, so it would walk normally, regardless of(不管/不顾) the washer man’s preference. 39 a period of time, the washer man started urging Donkey-B to be like Donkey-A. Donkey-B, unable to walk fast, got continuous 40 from the washer man. It cried and said personally to Donkey-A, “Dear friend, only we two are here, why do we have to 41 with each other? We can carry 42 load at normal speed. That made Donkey-A more energetic(精力充沛的)and it told the washer man that it could carry more load and 43 faster. The washer man started 44 Donkey-B to make it run faster. During the following days, Donkey-A carried more load and started running even faster. But it was hard for Donkey-B to 45 that way. The washer man was disappointed, 46 he punished Donkey-B terribly, and finally it fell down 47. Then the load of Donkey-B was also being 48 by Donkey-A, and still it had to run fast. Finally due to great tiredness it got tired and started feeling the 49. But the washer man 50 more from Donkey-A. It tried its best, but couldn’t 51 his owner’s expectations. The washer man got angry with Donkey-A and started 52 it to take more load. But it couldn’t come to the owner’s 53. Finally the day came when due to disappointment the washer man killed Donkey-A and began 54 some other donkeys. Think all colleagues(同事)are just the same and that everyone is 55. Don’t feel happy when your colleague is under pressure.
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新生儿出生时,身体红,四肢青紫,心率90次/分,呼吸20次/分,呼吸不规则,四肢略屈曲,弹足底有皱眉。Apgar评分为()
A.3分
B.4分
C.5分
D.6分
E.7分
甲上市公司(以下简称甲公司)主要从事丁产品的生产和销售。自2009年以来,由于市场及技术进步等因素的影响,丁产品销量大幅度减少。该公司在编制2010年半年度财务报告前,对生产丁产品的生产线及相关设备进行减值测试。
(1)丁产品生产线由专用设备A、B和辅助没备C组成。生产出丁产品后,经包装车间设备D进行整体包装后对外出售。
①减值测试当日,设备A、B的账面价值分别为900万元、600万元。除生产丁产品外,设备A、B无其他用途,其公允价值减去处置费用的净额及未来现金流量现值均无法单独确定。
②减值测试当日,设备C的账面价值为500万元。如以现行状态对外出售,预计售价为340万元(即公允价值),另将发生处置费用40万元。设备C的未来现金流量现值无法单独确定。
③设备D除用于丁产品包装外,还对甲公司生产的其他产品进行包装。甲公司规定,包装车间在提供包装服务时,按市场价格收取包装费用。减值测试当日,设备D的账面价值为1200万元。如以现行状态对外出售,预计售价为1160万元(即公允价值),另将发生处置费用60万元;如按收取的包装费预计,其未来现金流量现值为1180万元。
(2)丁产品生产线预计尚可使用3年,无法可靠取得其整体公允价值。根据甲公司管理层制定的相关预算,丁产品生产线未来3年的现金流量预计如下(有关现金流量均发生于半年末):
①2010年7月至2011年6月有关现金流入和流出情况:
项目 | 金额(万元) |
产品销售取得现金 | 1500 |
采购原材料支付现金 | 500 |
支付人工工资 | 400 |
以现金支付其他制造费用 | 80 |
以现金支付包装车间包装费 | 20 |
期数 | 1 | 2 | 3 |
系数 | 0.9524 | 0.9070 | 0.8638 |
分析、判断甲公司计算确定的设备A、B、C、D各单项资产所汁提的减值准备金额是否正确,并简要说明理由;如不正确,请计算确定正确的金额。