重复性试验是考查候选方法的()
A.过失误差
B.随机误差
C.比例系统误差
D.方法学误差
E.恒定系统误差
参考答案:B
解析:重复性试验是考查候选方法的随机误差。
—We should _______ humans from ________ down too many trees.
—I agree with you. Trees are very important to us.
A.keep; cut
B.prevent; cut
C.stop; cut
D.prevent; cutting
长城抗战