The term “moderate speed” was previously interpreted as mean

【名词&注释】

二冲程柴油机(two-stroke diesel engine)、有助于(helpful to)

[单选题]The term “moderate speed” was previously interpreted as meaning a speed which would enable a vessel ______ within half the range of visibility.

A. stopping
B. being stopped
C. to stop
D. to be stopped

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学习资料：

[单选题]冰敷有助于______。

A. 制止出血
B. 减轻肿胀
C. 减轻疼痛
D. 以上都对

[单选题]四步教学法的顺序是：_________。

A. 准备、讲解、演示、验证
B. 准备、演示、讲解、验证
C. 准备、讲解、验证、演示
D. 以上都不正确

[单选题]在二冲程柴油机的各种换气形式中，换气质量最好的是()

A. 直流扫气
B. 回流扫气
C. 横流扫气
D. 半回流扫气

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