对基层武器库看管人员的要求是:基层武器库要落实()名以上看管人员,由基层武装部和同级党组织审查,报上级军事机关审批。
A.1
B.2
C.3
D.4
参考答案:B
I don’t like the way _______Tom speaks to his mother. Which one is wrong?
A.that
B.in which
C.by which
D./
水的折射率为1.33,玻璃的折射率为1.50,
①当光从水中射向玻璃而反射时;
②当光由玻璃射向水中而反射时,
两种情况下起偏振角各为()。
A.50°26′,51°34′
B.38°26′,31°34′
C.48°26′,41°34′
D.26°26′,13°34′