【单选题】【消耗次数：1】
数学式子cos30o写成Visual Basic表达式是？
①
cos30
②
cos(30)
③
cos(30o)
④
cos(30*3.14/180)
参考答案：
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相关题目
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预混胰岛素30R（30/70）的组成为
①
30%中效胰岛素，70%短效胰岛素
②
70%中效胰岛素，30%短效胰岛素
③
30%超短效胰岛素，70%中效胰岛素
④
70%超短效胰岛素，30%中效胰岛素
⑤
30%中效胰岛素，70%长效胰岛素
【单选题】
A点坐标为（10、20、30），B点坐标为（30、20、30）则AB距离为______。
①
Normal
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X-NONE
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正垂线
②
Normal
0
7.8 磅
0
2
false
false
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ZH-CN
X-NONE
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侧垂线
③
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7.8 磅
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正平线
④
Normal
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7.8 磅
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ZH-CN
X-NONE
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铅垂线
【单选题】
一横波沿绳子传播时的波动方程为y=0.05cos（4πx-10πt）（SI），则（）
①
其波长为0.5m
②
波速为5ms-1
③
波速为25ms-1
④
频率为2Hz
【单选题】
数学算式3sin48o对应的算术表达式为（ ）。
①
3*sin(48*3.14159/180)
②
3*sin(48*3.14159)
③
3*sin(48)
④
3*sin(48/180.0)
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