正确答案: A

Doors

题目：（） are generally formed in the frame of the both in-line and Vee engines to give maintenance access to the crankshaft main and connecting rod large end bearing.

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学习资料的答案和解析：

[单选题]平衡精度的等级是按照（）来划分的。

[e]•ω

[单选题]轴系应用合理校中原理校中时，普遍采用（）定位，然后用（）验证。

测偏中值法/顶举法

[单选题]油润滑艉轴承的轴承材料一般选用（）。

巴氏合金

[单选题]中间轴承对轴系可靠性影响的主要因素是中间轴承的都不对（）。Ⅰ.位置；Ⅱ.数量；Ⅲ.间距

Ⅰ+Ⅱ+Ⅲ

[单选题]The fuel injector injects a fine spray of fuel into the hot air and combustion （）, producing much high pressure in the gases.

takes place

[单选题]Connecting rods in a diesel engine are used to connect the （）.

piston to the crankshaft

[单选题]Which of the combustion parameters listed is used in a diesel engine, but NOT related to the injection system?（）

Effective stroke