问题
单项选择题
X荧光压片法制样中,压片时的颗粒度以()目以上为好,这样在测定时的颗粒度影响就较小。
A.120
B.160
C.180
D.200
答案
参考答案:D
X荧光压片法制样中,压片时的颗粒度以()目以上为好,这样在测定时的颗粒度影响就较小。
A.120
B.160
C.180
D.200
参考答案:D
从方框内选单词,用其适当形式填空。每空限填一词,每词限用一次。 | |
2. The person is very . He can give us a satisfied answer. 3. What should we do to help stop ? 4. A serious language should not make such foolish mistakes. 5. What do you think is the most invention? 6. Since then, the of basketball has risen worldwide. |