催化剂的载体在化学上绝对是惰性的。

题型:判断题

问题:

催化剂的载体在化学上绝对是惰性的。

考点:甲醇装置操作工高级甲醇操作工高级甲醇操作工题库
题型:判断题

有下列命题:

①“若a<b<0,则a2>ab>b2

②命题“a、b都是偶数,则a+b是偶数”的逆否命题是“a+b不是偶数,则a、b都不是偶数”;

③若有命题p:7≥7,q:ln2>0,则p且q是真命题;

④命题:“若x2-x-2≠0,则x≠-1且x≠2”的否命题是若x2-x-2=0,则x=-1或x=2.其中真命题有______.

题型:判断题

把12g某固体放入90g水中,充分搅拌,有2g固体未溶解,则所得溶液的溶质质量分数是( )

A.10%

B.11.7%

C.12%

D.13.3%

题型:判断题
阅读下面短文,掌握其大意,然后从36—55各题所给的四个选项(A、B、C和D)中,选出最佳选项。
I am a mother of three and have recently completed my college degree. My teacher’s last 36  of the term was called “ Smile”. I am a very friendly person and always 37  at everyone. So I thought this would be very 38 .
Soon after we were given the project, my 39  went out to McDonald’s. We were waiting to be 40 , when all of a sudden everyone around us began to 41 , and even my husband did. There standing behind me were two homeless men 42 .
As I looked down at the short gentleman with 43  eyes, he said, “ Good day.” The second man stood behind his friend. I 44  the second man was mentally challenged(智障)and the blue-eyed gentleman was his helper.
The young 45  at the counter asked him what they wanted.
He said, “ Coffee is all ,Miss.” Because that was all they could 46 .
I smiled and asked the young lady to give me two more breakfast meals on a 47tray(托盘). I then said to the men, “ I did not do this for you. God is here 48  through me to give you hope.”
When I joined my husband, he smiled at me, saying, “That is 49  God gave you to me, Honey, to give me hope.”
I returned to 50 with this story in hand. I 51 “my project” and the teacher read it. Then she looked up at me and said, “ Can I 52  this with the class?”
I slowly 53 and she began to read and that was when I knew that we, as human beings, share this to help people and to be 54.
In my own way I had 55 the people at McDonald’s, my husband, sons, teacher, and every person that shared the classroom on the last night I spent as a college student.
小题1:
A.question
B.project
C.class
D.expression
小题2:
A.smile
B.laugh
C.look
D.stare
小题3:
A.difficult
B.funny
C.important
D.easy
小题4:
A.teacher
B.classmates
C.family
D.children
小题5:
A.ordered
B.served
C.paid
D.called
小题6:
A.run away
B.crowd in
C.shout out
D.move away
小题7:
A.in surprise
B.in silence
C.in rags
D.in fear
小题8:
A.tearful
B.blue
C.closed
D.black
小题9:
A.realized
B.accepted
C.permitted
D.admitted
小题10:
A.helper
B.gentleman
C.lady
D.friend
小题11:
A.drink
B.want
C.take
D.afford
小题12:
A.big
B.separate
C.flat
D.round
小题13:
A.working
B.going
C.getting
D.carrying
小题14:
A.how
B.when
C.where
D.why
小题15:
A.college
B.home
C.church
D.McDonald’s
小题16:
A.put up
B.handed out
C.handed in
D.put away
小题17:
A.publish
B.share
C.copy
D.keep
小题18:
A.turned
B.left
C.shook
D.nodded
小题19:
A.forgiven
B.thanked
C.helped
D.remembered
小题20:
A.touched
B.knew
C.forgot
D.recognized
题型:判断题

中国甲公司与德国乙公司于2011年4月签订了购买一批食品的合同,合同采用CFR术语,由某航运公司的"大洋"轮承运,将该批货物从马塞运往中国青岛,甲公司向中国人民保险公司投保了水渍险。"大洋"轮在运输途中遇小雨,因货舱舱盖不严而使部分货物湿损。请问依2010《国际贸易术语解释通则》及中国《海商法》,下列选项中哪些是正确的?()

A.承运人应当就货物湿损承担赔偿责任

B.承运人可依《海商法》的规定主张免责

C.甲公司可以从保险公司取得赔偿

D.乙公司对此不承担赔偿责任

题型:判断题

退抛法抛一字锚时,应:().

A.顶流先抛力锚,后抛惰锚

B.顶流先抛惰锚,后抛力锚

C.顺流先抛惰锚,后抛力锚

D.顺流先抛力锚,后抛惰锚

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