光纤的机械性能包含有:()A.光纤的抗冲击性能 B.抗扭转强度 C.抗拉强度 D.抗

题型:多项选择题

问题:

光纤的机械性能包含有:()

A.光纤的抗冲击性能

B.抗扭转强度

C.抗拉强度

D.抗卷绕强度

考点:传输线路维护人员考试光缆通信光缆通信题库
题型:多项选择题

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

     It's hard when a best friend isn't around-maybe because she moved to a different school or a different

class, or maybe she's just homesick for the day. Break or lunchtime can feel lonely without her. 1_____

You want to have new friends, but how do you make them? Maybe it seems like everybody else already

has their friends. 2_____

     Start by looking around your classroom-think about which kids you'd like to play with at break. Look

for chances to say hi to them, smile, and he friendly. 3_____ Invite someone to play with you or say "Do

you want to sit here?" in the lunchroom. When you're at break, walk over tc kids you want to play with,

act friendly, and say "Hi, can I play, too?" or just join in.

     If you have trouble doing this or if you're feeling shy, ask your teacher to help you make new friends.

Teachers are usually pretty good at matching up friends. 4_____ Be kind, be friendly, share, say positive

things, offer to help-and pretty soon, you'll have one, or two, or even more new friends. 

     5_____ But when you see each other, you can share something you didn't have before she left: You

can introduce her to your new friends!

A. What's right for me?

B. But remember, there's always room for more friends.

C. Will it ever feel the same?

D. The best way to make friends is to be a friend.

E. Offer to share something or offer greetings. 

F. Make a choice in your life.

G. You might still miss that special best friend.

题型:多项选择题

某膳食调查的人群由三类人员组成,其中能量RNI为3200kcal的有12人,3100kcal的有10人,2600kcal的有6人,全部人均进行了2天的膳食调查,该人群的蛋白质平均摄入量为80g/人•日。

计算该人群折合标准人的蛋白质摄入量。

题型:多项选择题

某一品种的菊花通常在秋季开花,若使其在夏季开花,应当采取的关键措施是适当时期()

A.补充光照使光照时间延长

B.适当提高温度

C.遮光使光照时间缩短

D.适当多浇水

题型:多项选择题

专业技术人员的职业发展路径不体现在岗位升迁,而是体现在薪酬的变更上,采用的是()职业生涯路径。

A.传统

B.网状

C.横向

D.双重

题型:多项选择题

古代钱庄的起源和发展过程是()。

A.起源于银钱兑换业,在流通中形成

B.中国古代货币制度下多种货币流通,使得兑换业发达起来

C.唐代的金银铺、宋代的交引铺、明代的钱铺。

D.明末,钱庄已成为重要的信用机构

E.鸦片战争后,钱庄发展很快,其数量与资本额有大幅度增长

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