化工生产中所使用的各种机器设备都是由()制成的。

题型:填空题

问题:

化工生产中所使用的各种机器设备都是由()制成的。

考点:液氯工液氯工题库
题型:填空题

读短文,选答案。

      Usually I go to school on foot but this morning I went to school by bus, because I got up late. My best

friend Mike didn't come to school today. He went swimming yesterday and had a cold. The doctor asked him

to stay in bed and take some medicine. After class, John and I went to visit Mike. He is much better. I hope he

can go to school tomorrow.

1. I usually go to school ______________.[ ]

A. by bus

B. on foot

2. I went to school by bus this morning because ______________.[ ]

A. I got up late

B. I had a cold

3. Mike ______________ yesterday.[ ]

A. went shopping

B. went swimming

4. John and I went to ______________..[ ]

A. the hospital

B. visit Mike

5. How does Mike feel now?  ______________.[ ]

A. He is angry.

B. He is better.

题型:填空题

计税依据也称计税标准,是指计算应纳税额的依据或标准,计税依据可分为从价计征和从量计征两种。()

题型:填空题

装载木材时立柱的设置间距亦应和所载运木材的长度及特性相适应,一般不应超过()m。

A.3

B.4

C.5

D.6

题型:填空题

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:填空题

当铜片和锌片浸入稀H2SO4中并且用导线联结形成原电池时,产生的现象是()

A、铜片上有氢气产生

B、锌片上有氢气产生

C、铜片溶解

D、不会有任何变化

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