使用强碱是危险作业吗?由谁审批?
参考答案:
是,由泥浆队队长审批。
—Do you think that man will come to your help?
—I really don’t know a person like him can help me with.
A.how
B.what
C.why
D.if
优化由国家基准气候站、国家基本天气站、一般气象站和专业气象观测站组成的地面气象观测网属于()发展目标。
A.地面气象观测
B.地基遥感探测
C.地基气候系统观测