钎头吹洗孔的直径()钎杆中心孔的直径。
A.小于
B.大于
C.等于
参考答案:A
It's too high. Let's get a ladder ______ you. [ ]
A. on
B. in
C. with
D. for
最适温度:指种子能()并达到()百分率所处的温度。