Given an EL function declared with:11. 12.spin 13.com.example.Spinner 14. 15.java.lang.String spinIt() 16. 17. Which two are true?()
A. The function method must have the signature: public String spin().
B. The method must be mapped to the logical name "spin" in the web.xml file.
C. The function method must have the signature: public String spinIt().
D. The function method must have the signature public static String spin().
E. The function method must have the signature: public static String spinIt().
F. The function class must be named Spinner, and must be in the package com.example.
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柴油机在压缩行程时()。
A. 压缩可烯混合气
B. 压缩的是纯空气
C. 进入气缸的油气被压缩
D. 化油器配制好的混合气被压缩
良好的盖层岩石一般比较()。
A. 疏松
B. 坚硬
C. 松软
D. 致密
外部皮带未开启时,严禁开转载破碎机。
A. 正确
B. 错误