胃癌的好发部位为（）
A．小弯
B．大弯
C．胃角
D．胃窦
E．十二指肠球部
参考答案：D
His poor _____ English prevented him _____.
A．spoken; from understanding
B．spoken; from being understood
C．speaking; from understanding
D．speaking; from being understood
选煤厂工艺岗位控制室作业，正式起车的操作程序是什么？
