超声波探伤较射线探伤具有()、探伤周期短、成本低、安全等优点。
A.较高的灵敏度
B.判断缺陷性质准确
C.判断缺陷性质直观
D.要求工件表面光洁度低
参考答案:A
根据短文内容和所给中文提示,在空白处填入单词。每空限填一词。
Sunday,May lst
I have been here in Singapore __小题1:__(和) my family for a week. This country is actually a ____小题2:____(城市). It’s small but clean. This morning it was __小题3:_(晴朗的),so we got up __小题4:_(早) and went to the beach. I __小题5:__(打) beach volleyball with others. My parents walked __小题6:__(缓慢地) on the soft sand. We __小题7:__(全体) had a good time there. In the evening,we arrived at Night Safari. We saw a young _小题8:_(老虎). It was very cute!
Tomorrow my parents will __小题9:__(带去) me to the Singapore Flyer,which is the __小题10:__(最大的) Ferris wheel in the world! It’s an exciting place. I am looking forward to it.
合成谷氨酸需要经过()
A、EPM途径
B、HMP途径
C、TCA途径
D、以上都对