A、 A lab analysis of the contamination is required to the frequently clogged filters.
B、 When you find the filters blocked in a very short time, ask the vendor to inspect them for any contamination.
C、 If the filters get clogged at an unusually early stage, send them to the laboratory to analyze the contamination.
答案：C
A、 A lab analysis of the contamination is required to the frequently clogged filters.
B、 When you find the filters blocked in a very short time, ask the vendor to inspect them for any contamination.
C、 If the filters get clogged at an unusually early stage, send them to the laboratory to analyze the contamination.
答案：C
A. 大量的高压燃油供油用于作动筒控制和到燃烧室的计量燃油，其余部分通过溢流活门返回给低压系统。
B. 除作动器控制和到燃烧室的计量燃油外，过量的高压燃油供油通过溢流阀返回给低压系统。
C. 超量的高压燃油供油用于作动筒控制和到燃烧室的计量燃油，之后通过减压阀返回给低压系统。
A. A mixture of fuel and oxygen can cause an explosion.
B. A mixture of fuel and nitrogen can cause an burn.
C. A mixture of gas and oxygen should cause an explosion.
A. Notes emphasize conditions such as operating procedures, inspection, repair or maintenance, etc., which may be met as appropriate.
B. Notes emphasize the conditions of operation procedure, inspection, repair or maintenance, etc., must be followed.
C. Conditions for operating procedures, inspection, repair or maintenance, etc. must be emphasized in the notes.
A. Operator is in charge of the maintenance of the handbook.
B. The handbook should be kept current by the operator.
C. The operator should store the handbook in a proper status.
A. Do not install 0.1 mm thick shims.
B. Do not install shims which are more than 0.1 deep.
C. Do not install shims that are more than 0.1 mm thick.
A. 这个笔记本电脑有三个备用部件。
B. 笔记本电脑有三个主要部分。
C. 这个螺钉有三个主要部分。
A. 技术文本通常包含很长的词组，在句子中具有一种词性的作用。
B. 技术文本通常包含很多组单词，这些单词在句子中具有一定的作用。
C. 技术文本通常包含长难句，其中的单词在句子中的作用相当于某个词性。
A. NOTE: This tryout is to make sure that the flap position indicating system is in a zero energy state.
B. NOTE: This test is to make sure that the flap position indicating system is in a zero condition.
C. CAUTION: This test is to make sure that the flap position indicating system is in a zero condition.
A. Shall include dedicated tools, items and materials.
B. Common tools, equipment and materials shall include.
C. Special tools, equipment and materials shall be included.
A. When the crossfeed system is open, it is possible for one fuel pump to supply fuel to the two engines.
B. When the supplying system is open, it is possible for one fuel pump to supply fuel to the two engines.
C. One fuel pump can supply fuel to two engines,as the supplying system is open.
