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审计依据

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种子是由()发育而成的。

A. 胚
B. 胚珠
C. 子房
D. 胚乳

山区抬运笨重物件或钢筋混凝土电杆的道路,其宽度不宜小于()m,坡度不宜大于1:4

A. 1.2
B. 1.4
C. 1.6
D. 1.8

Thermocouple pyrometers are used on large, main propulsion diesel engines to indicate the temperature of the()

A. cooling water leaving each cylinder
B. fuel oil entering the injector
C. exhaust gases at various locations
D. lube oil at the bearing supplie

远红外加热技术按温度等级分为低温加热、高温加热二个等级。

A. 正确
B. 错误

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