双硫腙溶于氯仿中的溶解度为() A.0.3g/L(淡绿色) B.0.4g/L(绿色)

题型:单项选择题

问题:

双硫腙溶于氯仿中的溶解度为()

A.0.3g/L(淡绿色)

B.0.4g/L(绿色)

C.0.64g/L(绿色)

D.1.64g/L(暗绿色)

E.17.3g/L(蓝绿色)

考点:理化检验技术理化检验技术题库
题型:单项选择题

When I was growing up, I had an old neighbor, Dr. Gibbs. He didn’t look like any doctor I’d ever known. He never invited us to play in his yard, but he was a very kind person.

When Dr. Gibbs wasn’t saving lives, he was planting trees. He owned a large field and wanted to make it a forest.

The good doctor had some interesting ideas about planting trees. He never watered his new trees. Once I asked why. He said that watering plants spoiled them, and that if you watered them, each baby tree would grow weaker and weaker, so you had to make things difficult for them and pick out the weaker trees early on.

He talked about how watering trees made for shallow(浅的)roots, and how trees that weren’t watered had to grow deep roots in search of water under the earth by themselves. Deep roots were very important.

So he never watered his trees. He’d planted an oak and, instead of watering it every morning, he’d beat it with a rolled-up newspaper. I asked him why he did that, and he said it was to get the tree’s attention.

Dr. Gibbs died several years after I left home. Every now and then, I walked by his house and looked at the trees that I watched him plant about twenty-five years ago. They’re very big and strong now. I planted some trees a few years back and carried water to them for whole summer.

After two years of caring too much, whenever a cold wind blows in, they shake a lot.

Every night before I go to bed, I check on my two sons. Mostly I pray(祈祷)that their lives will be easy. But lately I’ve been thinking that it’s time to change my prayer. I know my children are going to face difficulties. There’s always cold wind blowing somewhere, so what we need to do is to pray for roots that reach deep into the brave heart, so when the rains fall and the winds blow, we could face it strongly and won’t be beaten down.

小题1:We know from the passage the doctor           .

A.didn’t know how to plant trees at all

B.wasn’t good at his own medical job

C.had his own ways of planting trees

D.had nothing to do but plant trees小题2:When Dr. Gibbs said “…pick out the weaker trees early on.”, he meant that          .

A.some weak trees would be easily found out at the beginning

B.he would choose the weak trees to water earlier

C.the weak trees would be sent to his patients later

D.he would not plant weak trees so early anymore小题3:The passage tells us that the writer      .

A.should beat his trees with a rolled-up newspaper

B.didn’t often water his trees

C.didn’t have a large field

D.took too much care of his trees小题4:Which can be the best title of the passage?

A.Watering trees

B.Growing roots

C.Doctor and his neighbor

D.Father and his children

题型:单项选择题

肛瘘的典型临床表现有

A.肛门口有肿物反复脱出

B.肛周皮肤上可见红色 * * 状突起,挤压时有脓性液体溢出

C.反复发作肛周脓肿

D.排便时肛门痉挛性疼痛

题型:单项选择题

会计核算的前提条件有会计主体、持续经营、()、()。

题型:单项选择题

从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性:().

A.A

B.B

C.C

D.D

题型:单项选择题

多晶质体

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