驾驶杆开关组件功能是()
A.脱开自动驾驶,转用人工驾驶
B.断开自动驾驶的配平功能
C.感受驾驶杆的力大小
D.判断驾驶杆操纵方向与安定面配平方向是否一致
参考答案:D
根据对话情景,在空白处填入适当的句子,使对话完整、通顺。(注意首字母大写及标点符号)
A: The weather is very hot today 1________
B:Yes, it is.
A: Let's go swimming.
B: 2________ Which swimming pool are you going to?
A: I usually go to Sandy Swimming Pool. Today I'm going to Eric Swimming Pool 3_________
B: No, I haven't. 4 _________
A: By taxi.
B: OK. 5_________
A: For five years.
B: Who taught you to swim?
A: My father.
衡量一个地区生物资源丰富程度的客观指标是()
A.物种的多样性
B.生物的多样性
C.生态系统的多样性
D.遗传的多样性