挑战习题
1/5单选题
难度:

1.下列以为自变量的函数中,是指数函数的是(    )
A
B
C
D
提示1:
IOaMh+aVsOWHveaVsDxpbWcgd2lkdGg9NDEgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvRTQvODUvckJBQ0ZGUUpZVnZ6M1pGekFBQUJxM2l2bnhvMjIyLnBuZyI+55qE5bqV5pWwPGltZyB3aWR0aD04NiBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8wMS9DMi9yQkFDRTFRSllWdnhtM1k0QUFBQ0JnTk4xOW81MzkucG5nIj4=
提示2:
IOaMh+aVsOWHveaVsDxpbWcgd2lkdGg9NDEgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvRTQvODUvckJBQ0ZGUUpZVnZ6M1pGekFBQUJxM2l2bnhvMjIyLnBuZyI+55qE57O75pWw5pivMQ==
提示3:
IDxpbWcgd2lkdGg9MTEwIGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwL0U0Lzg1L3JCQUNGRlFKWVZ2U0FtdDBBQUFDYjNMbmlFWTYyMC5wbmciPg==
正确答案:Qg==
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