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【多选题】
针对该系统,下列说法正确的是()。A.
6控制8缸退回速度。
B.
B2发信号给3YA，使右缸前进。
C.
B4发信号给2YA。
D.
B1发信号给4YA。
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举一反三
【单选题】Identify the sentence type of the following sentence.For Marx, work had become a passion, and he was so absorbed in it that he often forgot his meals.
A.
compound-complex sentence
B.
complex sentence
C.
compound sentence
D.
simple sentence
【单选题】Identify the sentence type of the following sentence.For Marx, work had become a passion, and he was so absorbed in it that he often forgot his meals.
A.
compound-complex sentence
B.
compound sentence
C.
complex sentence
D.
simple sentence
【简答题】He was so absorbed in observing the_______of the tower in the water that he didn't catch what I said. (reflect)
【多选题】安全科学原理研究的主要途径有哪些?
A.
从已经发生的事故中研究归纳安全科学原理
B.
从风险大小分析过程中研究归纳安全科学原理
C.
从系统确保安全过程中研究归纳安全科学原理
D.
以上三者的联合运用
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