胰岛素依赖型糖尿病的易感性原发关联成分是
A．HLA-AB．HLA-BC．HLA-DPD．HLA-DQE．HLA-DR
参考答案：D
选出有错误的一项。
( )1. It's time for go to school.
A B C
( )2. It's nine oclock.
( )3. I have ten clock.
( )4. It's time for english class.
( )5. Let's to go home.
矿井应当设置井下应急（）系统，保证井下人员能够清晰听见应急指令。
A.广播
B.电视
C.电话
