起重时选择钢丝绳卡的尺寸应适合钢丝绳的直径,一般钢丝绳卡的尺寸以大于钢丝绳直径()m

题型:单项选择题

问题:

起重时选择钢丝绳卡的尺寸应适合钢丝绳的直径,一般钢丝绳卡的尺寸以大于钢丝绳直径()mm左右为佳。

A.1

B.2

C.3

D.4

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题型:单项选择题
根据材料内容选择最佳答案,并将其标号填入题前括号内。
Computer course
This computer course is for people who don't know much and need to learn about computers. You will learn what computers are, what they can and can't do, and how to use them.
★Course fee :$75
★Equipment fee :$10
★Time :Every Sunday in March (9:00-11:50am)
★Teacher :A famous professor of computer science
Stopping smoking course
Do you want to stop smoking? Have you tried to stop it but failed? Now it's time to stop smoking by using the latest methods.  This course will help you stop smoking.
★ Course fee:  $ 30
★ Tune: Every Sunday in March (3:00 pm- -6:00 pm)
★ Teacher: Dr John Smith, who has helped hundreds of people stop smoking 
Typing course
This course is for those who want to learn to type and those who want to type faster. You are tested in the first class and begin practicing from one of the eight different skill levels. This allow you to learn at your own speed. Bring your own paper. 
★Course fee : $125
★Equipment fee: $25
★Time: Two hours each evening for two weeks in April. New classes begin every two weeks.  
★Teachers: A number of the best business education teachers
小题1:If Linda wants to take the computer course ,how much should she pay?
A.$10.B.$30.C.$75.D.$85.
小题2:If Mr Green wants to stop smoking,  he may take the course_______
A. every morning in January
B. every Sunday afternoon in March
C.every evening in April
D. every Sunday morning in March
小题3:If you want to meet Dr John Smith,  you can take______.
A.the computer course
B.the typing course
C.the stopping smoking course
D.the smoking course
小题4:If will take you______ to take the typing course in a month.
A.28 hoursB.14 hoursC.12 hoursD.2 hours
小题5:According to the passage, which of the following is TRUE?
A.The computer course is 3 hours each time.
B.The typing course has eighteen skills levels.
C.For the stopping smoking course, you have to pay $10 for the equipment
D.Stopping smoking course is the cheapest of all.
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拆船保险的保险标的主要是()。

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B.已拆的船舶

C.已拆的海上装置

D.已拆的船舶及装置

题型:单项选择题

化学科学在药物的开发、合成和使用中起着至关重要的作用。如小苏打、氢氧化铝、三硅酸镁等可治疗胃酸过多,硫酸亚铁可补铁、防治贫血。试回答下列问题:

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(2)现有一瓶胃舒平药片(复方氢氧化铝),请设计实验验证其主要成分。(写出实验步骤和实验现象):将药片碾碎,                                                      则说明其主要成分为氢氧化铝。

(3)自选合适的氧化剂,将补铁剂中的Fe2+氧化成Fe3+,写出相关的离子反应方程式:

________________                 ______。

题型:单项选择题

某柱采用MU10烧结普通砖及M5水泥砂浆砌体,截面为490mm×620mm,柱计算高度H0=5.6m,为偏心受压,偏心距为e=90mm(长边方向)施工控制质量为B级。

该柱的承载力与()项数值最为接近。

A.150.23kN

B.196.9kN

C.200.1kN

D.237.5kN

题型:单项选择题

()是指在儿童家庭教育中,家长通过各种机会了解孩子的特点,发现孩子的需要,捕捉孩子的兴趣,诱导孩子充分发展自己的个性特点的一种方法。

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