几何因素不适当、胶片和铅箔增感屏接触不良以及胶片粒度大小将可能造成()
A、底片黑度过高
B、清晰度不好
C、底片灰雾度大
D、底片黑度过低
参考答案:B
用括号内所给动词的适当形式填空
小题1:Tom, (not stay) out too late.
小题2:_______ your uncle ______ (clean) his car every week?
小题3:Tom with his brother _________ (chat) with each other on the Internet now.
小题4:I usually spend thirty minutes (read) English in the morning.
小题5:Is it important for us (drink) lots of water every day.
小题6:There (not be) any calories in water. So you can drink it without getting fat.
小题7:People all like the game ________ (call)‘trick or treat’in the USA.
小题8:Players need lots of energy ________ (run) every day.oo
小题9:The boss often makes his workers ________ (work) for 12 hours.
小题10:Look! The boy (have) a comic book in his hand.
当职工违章操作时,班组长应加以制止,如操作者不听劝阻,班组长有权令其停止工作,直到危害消