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问题 单项选择题

采用气控紧急熄火装置的加油车测试熄火时，应在储气筒压力达到（）时进行。

A.0.35±0.035MPa

B.0.35-0.55MPa

C.0.5-0.8MPa

D.0.6-0.8MPa

答案

参考答案：D

单项选择题

蓄压器的耐水压试验，以公称压力的（）倍压力保证1min检查各部有无异常情况。

A.1.2

B.1.5

C.1.8

D.2
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单项选择题

In order to perform the monitor function, language learners have to satisfy at least three conditions :______to monitor his production, focus on form and clean knowledge of the rules of the target language.

A．enough speed

B．much information

C．sufficient material

D．sufficient time
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