简述确定化合物分子量、分子式的方法。

题型:问答题 简答题

问题:

简述确定化合物分子量、分子式的方法。

考点:执业西药师药物化学药物化学题库
题型:问答题 简答题

血清铜和铜蓝蛋白同时升高见于()

A.肝硬化

B.骨折

C.感染

D.妊娠

E.贫血

题型:问答题 简答题
A man wanted to make an investment. An idea struck him: “Why don’t I plant a small mango tree and enjoy the benefits when it grows into a big one?” So he went to the    , bought a small tree and took it home. To the pride of his family, he     it in the center of his     .
He read everything about      a mango tree. He got up early every morning, for he was determined to supply the tree with all the necessary nutrients. He watered it,      it with manure(粪肥),and took good care of its leaves by removing those      ones. He made sure the tree received enough care.
Many times he sat and      the beauty of the growing tree while dreaming about the      mangos that the tree would     . His mind was always filled with the wish to taste the first fruit of the tree.
Years went by     …Now, he had a big tree with its leaves shining and healthy, its bark(树皮)healthy and hard. It was a big attraction      it decorated his whole garden.
Then one day he noticed a small bud(花蕾),which in a couple of days grew into a beautiful     .Now he could hardly wait for the fruit, so he started to      his supply of nutrients and care. Then one day the tree let out its first product—a small green fruit. The man was so     .
He waited for a few more weeks till the fruit grew in     .The day came when he decided to      the first fruit of the tree. He      the tree, picked the fruit and then came his     .The fruit was not like what he expected. It was hard, big and round. He was puzzled. He was sad.
Seeing this, his      came and asked him what happened. He told them that the fruit from his tree was not what he wanted. When the neighbors heard this, they did not know whether to      or comfort him, for what he planted years ago was not a mango tree. We can only reap(收获)what we plant.
小题1:
A.cityB.farmC.marketD.shop
小题2:
A.grewB.movedC.plantedD.threw
小题3:
A.gardenB.houseC.villageD.yard
小题4:
A.buyingB.improvingC.keepingD.raising
小题5:
A.decoratedB.equippedC.servedD.supplied
小题6:
A.greenB.redC.whiteD.yellow
小题7:
A.admiredB.drewC.greetedD.operated
小题8:
A.beneficialB.expensiveC.healthyD.tasty
小题9:
A.bearB.burstC.deserveD.make
小题10:
A.immediatelyB.quicklyC.narrowlyD.suddenly
小题11:
A.becauseB.ifC.thoughD.when
小题12:
A.flowerB.fruitC.leafD.nut
小题13:
A.riseB.increaseC.decreaseD.decline
小题14:
A.greedyB.happyC.nervousD.sad
小题15:
A.ageB.lengthC.sizeD.width
小题16:
A.observeB.sellC.stealD.taste
小题17:
A.climbedB.cutC.hidD.killed
小题18:
A.anxietyB.cheerC.disappointmentD.opinion
小题19:
A.childrenB.friendsC.neighborsD.relatives
小题20:
A.complainB.laughC.motivateD.support
题型:问答题 简答题

下列单位换算中正确的是[ ]

A.5.2m=5.2×100=520cm

B.5.2m=5.2×100cm=5.2×102cm

C.5.2m=5.2m×100cm=520cm

D.5.2m=5.2÷1000km=5.2×10﹣3km

题型:问答题 简答题

使用电脑软件着色的优点是()。

A.不会串色

B.不需晾干

C.色界线准确

D.调整方便

题型:问答题 简答题

评价原则之间常存在矛盾。要提高产品的性能,就要增加成本,使产品的价格上升要考虑经济性原则,就制约了产品性能的提升。此时最好的办法是分析产品的性价比,找到一个较好的平衡点。这启示我们,企业确定一个好的选择点所运用的哲学方法是()

A.两点论

B.重点论

C.均衡论

D.一点论

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