收集、量测和记录来自地面目标地物的电磁波信息的仪器。
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Directions: There are 10 incomplete statements here. You are required to complete each statement by choosing the appropriate answer from the 4 choices marked A) , B) , C) and D) . You should mark the corresponding letter on the Answer Sheet with a single line through the center.The classroom needs______.
A. clean
B. to clean
C. to be cleaned
D. being cleaned
Directions: There are also 10 incomplete statements here. You should fill in each blank with the proper form of the word given in the brackets. Write .the word or words in the corresponding space on the Answer Sheet.We started the attack when the enemy (cross) ______ the river.
Directions: This part is to test your ability to translate English into Chinese. Each of the four sentences is followed by four choices of suggested translation marked A) , B) , C) and D) . Mark the best choice and write the corresponding letter on the Answer Sheet.Our identity has a major effect on our communication.A) 我们的身份对交流还有一定的效果。B) 我们的看法对整个交流产生了很大的阴影。C) 我们的身份对交流有着重要影响。D) 我们的认识对我们的交流有重要影响。
( )使用星型拓扑。
A. 10Base-5
B. 10Base-2
C. 10Base-T
D. 以上都不对