()不具有补偿作用。A、齿式联轴器 B、套筒联轴器 C、滑块联轴器 D、万向联轴器

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问题:

()不具有补偿作用。

A、齿式联轴器

B、套筒联轴器

C、滑块联轴器

D、万向联轴器

考点:液化天然气操作工机械设备维护保养机械设备维护保养题库
题型:单项选择题

下列有关开国大典的表述错误的是[ ]

A.北京30万军民齐集 * * 广场      

B.毛 * * 升起第一面五星红旗

C.举行了盛大的阅兵式                

D.54门礼炮齐鸣49响

题型:单项选择题

B


It keeps your insides from falling out. It helps you warm up when you are cold, and it can cool you off when you are hot. It lets you feel things by touch.
What is this Your skin, of course! What does your skin ask for in return for all the wonderful things it does Just a little care! So let’s learn how to take good care of our skin.
Like the heart and stomach, your skin is an organ(器官). In fact, it is the largest organ in your body. Unless there’s a problem, you may not think about your skin very much. But skin has an important job to do.
Your skin is protecting you. Your skin keeps you from getting sick. When you take care of your skin, you are helping your skin do its job. Taking care of your skin today will help you have no problems in the future.
Clean skin is happy skin! One simple way to take care of your skin is to keep it clean. Keeping your hands clean is very important. When washing your hands, use warm water. Wet your hands, and then use soap. You should wash your hands carefully everywhere.
You’ll also want to use warm water, but not too hot, when you take a bath. Use soap to clean your body. Don’t forget under your arms and behind your ears! Your face needs attention, too. It’s a good idea to wash your face once or twice a day with warm water.

Why does the writer think we should try to take care of our skin today ( )

A.To help us warm up when we are cold.

B.In order to keep our insides from falling out.

C.In order to help us have no problems in the future.

D.To let us feel things by touc

题型:单项选择题

芽殖(blastic)

题型:单项选择题

有如下程序:
Option Base 1
Private Sub Command1_Click()
Dim arr(10)
arr+Array(10, 35, 28, 90, 54, 68, 72,90)
For Each a Inarr
If a>50 Then
Sum=Sum+a
End If
Next a
End Sub
运行上述程序时出现错误,错误之处是( )。

A) 数组定义语句不对,应改为Dimarr
B) 没有指明For循环的终值
C) 应在For语句之前增加Sum=0
D) Next a应改为Next

题型:单项选择题

教育要体现对人本身的关注。这就要求教师()。

A.尊重学生

B.关心学生

C.理解学生

D.爱护学生

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