I want to ___________ a bus to Shijiazhuang.[ ]
A. by
B. take
C. taking
答案:B
脊髓休克时可以出现
A.神志丧失
B.肌张力减低
C.病理反射阴性
D.血压下降
E.反射丧失
《关于合理开采煤炭资源提高回采率的若干规定(试行)》中规定,各类煤层采区回采率:()
A.薄煤层不低于97%,中厚煤层不低于95%,厚煤层不低于93%
B.薄煤层不低于75%,中厚煤层不低于65%,厚煤层不低于55%
C.薄煤层不低于85%,中厚煤层不低于80%,厚煤层不低于75%
D.薄煤层不低于93%,中厚煤层不低于85%,厚煤层不低于80%