有关喉的发声,下列哪项是错的
A.发高音时声带紧张度增强
B.发低音时声带处于松软状态
C.发声时喉头是固定的
D.发声时声门裂是完全关闭的
E.发低音时声门裂后部裂隙较宽
参考答案:D
Believe it or not, the matter, ________ we argued for a long time, was in fact related to our study.
A.over it
B.with them
C.about which
D.for which
常规晶体硅电池转换效率平均每年提升()。
A.20%~23%
B.16%~18%
C.20%~21%
D.9%~11%