题目内容

钢轨探伤仪37°探头探测50kg/m钢轨第一螺孔时(声程为200mm),探头入射点移至距轨端10mm左右,在荧光屏刻度()左右显示倒打螺孔波。

A. 2.3格
B. 3.3格
C. 4.3格
D. 5.3格

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尾柄长是指臀鳍基部至尾鳍基部的直线长度。

A. 正确
B. 错误

An operator is asked to verify the exact location of the default JRE binary. The following commands were run: $ which java /usr/bin/java $ ls -l /usr/bin/java lrwxrwxrwx 1 root other 23 Jan 27 2006 /usr/bin/java -> ../jre1.5.0_06/bin/java Based on the command outputs above, what is the path to the java executable file?()

A. /usr/bin/java
B. /usr/jre1.5.0_06/bin/java
C. /usr/bin/jre1.5.0_06/bin/java
D. /usr/bin/java/jre1.5.0_06/bin/java

受煤坑存在最主要的危险因素是车辆或机械的挤压或碰撞。

A. 正确
B. 错误

半砖墙的实际厚度为()

A. 120mm
B. 115mm
C. 100mm
D. 125mm

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