659. 测量硅胶吸收水分所需的时间。

A. Lubricate one side of the washers.

B. Lubricate one side of the seals.

C. Wash one side of the washers.

A. The CFM56-7 is a high roadway, dual rotor, axial flow turbofan engine. The start valve is a butterfly shutoff valve;

B. The CFM56-7 is a high aisle, dual rotor, axial flow turbofan engine. The start valve is a butterfly shut down valve;

C. The CFM56-7 is a high bypass, dual rotor, axial flow turbofan engine. The start valve is a butterfly shutoff valve;

A. 风挡出口是在机长和副驾的挡风口前面

B. 风挡出口是在机长和副驾遮光板的前面

C. 风挡出口是在机长和副驾操作板的前面

A. The equipment lit shall contain all equired or optional equipment.

B. All required equipment and facilities should be included in this list.

C. Only optional equipment is described in this equipment list.

A. Every time he comes under a new idea, he writes it down in his notebook.

B. Every time he thinks of a new idea, he writes it down in his notebook.

C. Every time he comes in a new idea, he writes it down in his notebook.

A. 将齿轮接合到花键轴上。

B. 将起落架轮子接合到键轴上

C. 将传动装置接合到轴键上

A. In technical texts, you can use abstractions to make sentiments shorter and easier to read.

B. In technical texts, you can use abbreviations to make sentences shorter and easier to read.

C. In technical texts, you can use abstractions to make sentences shorter and easier to understand.

A. In the maintenance manual, this section shall cover subjects such as power plant buildup, teardown, etc.

B. In the overhaul manual, this section shall cover subjects such as power plant buildup, teardown, etc.

C. In the overhaul manual, this section have to cover subjects such as power plant buildup, teardown, etc.

A. 通过最少两个全循环操作副翼,并操作至其最大行程

B. 至少完整操作副翼两个全循环至其最大行程

C. 操作副翼最小两个单位,至其最大行程

A. Material’s tensile stress opposes to stretch or lengthen itself.

B. Material’s tensile strength is used to compress or shorten itself.

C. Material’s tensile strength opposes to stretch or lengthen itself.