液化气船载货容积2000m³及以上的船舶,应再配备()安全设备。
A.1套
B.2套
C.3套
D.4套
参考答案:B
阅读理解。
This is my home. I live on a farm. I work here. I work seven days a week. I work five in the morning
to seven at night. Many people work in a factory. I work on a beautiful farm. My farm is like a beautiful
painting. I grow rice and different kinds of vegetables such as carrots, onions, tomatoes and potatoes. In
the morning I can see many colors and hear the birds sing. I love working here. I love my rice like my
children. I love farming.
Read and complete.
I am a 1________, I work 2________ hours a day. I like working 3_______ a farm very much, but I
don't like working in a 4________. I think my farm is as beautiful as a 5________. I 6_______ rice
and different 7_______ of vegetables. Every day when I see the colors and 8_______ the birds 9_______,
I feel very happy. I really 10_______ working here.
下列是小明实验时的操作或记录的数据,正确的是( )
A.用托盘天平称量时,把氢氧化钠固体直接放在纸上
B.用托盘天平称得一块橡皮的质量是23.43 g
C.用pH试纸测得某品牌饮用水的pH为7.5
D.用10mL量筒量取4.6mL水