问题
单项选择题
激光的特点以下哪一项有误（）
A.方向性强
B.相干性好
C.穿透性强
D.单色性好
E.极化性高
答案
参考答案：C
解析：激光的穿透性与它的波长有关，长波长穿透性强，短波长穿透性低。
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激光的特点以下哪一项有误（）
A.方向性强
B.相干性好
C.穿透性强
D.单色性好
E.极化性高
参考答案：C
解析：激光的穿透性与它的波长有关，长波长穿透性强，短波长穿透性低。
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