在双代号时标网络计划中,虚箭线上波形线的长度表示()。
A.工作的总时差
B.工作的自由时差
C.工作的持续时间
D.工作之间的时间间隔
参考答案:D
阅读理解。
Now TV programs play an important part in our daily life. We can get a lot of knowledge and a lot of fun
from it. Today is Saturday. The following are some TV programs and different channels today. Now read these TV programs and try to find some information for you and your family members. SXTV Channel 7 13∶12
Football Match XATV Channel 4 15∶30 TV Play SXTV Channel 6 18∶30 Cartoon CCTV Channel 1 12∶38
Law Today CCTV Channel 1 19∶00 News Report CCTV Channel 3 21∶00 The Latest Music
根据短文内容判断正误,正确的用"T",错误的用"F".
( )1. My grandfather is interested in law. He can watch CCTV Channel 1 at noon.
( )2. My father is a football fan. He prefers football matches. He can watch CCTV Channel 1.
( )3. My mother likes watching TV plays. She wants to watch XATV Channel 4 in the afternoon.
( )4. My sister is only six years old. I want to find a program for her. I think she can watch CCTV Channel 6.
( )5. I like music. So I can watch CCTV Channel 3 this evening.
早期发现拉缸时,可采取的措施包括()。
Ⅰ.加强缸套冷却
Ⅱ.加强活塞冷却
Ⅲ.加大注油量
Ⅳ.降速
Ⅴ.单缸停油
A.Ⅰ+Ⅱ+Ⅲ+Ⅳ+Ⅴ
B.Ⅰ+Ⅲ+Ⅳ
C.Ⅱ+Ⅲ+Ⅳ+Ⅴ
D.Ⅲ+Ⅳ+Ⅴ