胶粘带
参考答案:
它是以纸、布、塑料膜为基材,再把湿型胶粘剂均匀涂布在上述基材上制成纸质胶粘带、布质胶粘带、热敏型胶粘带、压敏型胶粘带,是由基材、胶粘剂、剥离剂三部分组成。
She was disappointed to find her suggestion _________.
A.turning down
B.to be turned down
C.turned down
D.to turn down
焊机的负载持续率不应超过于()
A.30%
B.50%
C.60%