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【简答题】
第一类危险源和第二类危险源采用哪些方法进行控制？
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】It has been five years since this party____. Many people wonder whether it will stay on.
A.
has come to power
B.
came to power
C.
has been in power
D.
in power
【单选题】在20世纪50年代初的争论中，改变了原来的经济观点。属于争论后的的观点有（） ①社会主义国家不存在商品生产 ②保持商品生产、商品交换，是社会主义获得胜利的唯一可能的道路 ③两种社会主义公有制和两个社会主义生产部门的存在，是社会主义商品生产存在的根本原因 ④社会主义商品生产不仅包括个人消费品，也包括生产资料
A.
①③
B.
①②③④
C.
②③
D.
②③④
【单选题】He ______ to the party this evening if he has to look after his younger sister. [ ]
A.
needn't to come
B.
doesn't need to come
C.
doesn't need come
D.
needs not come
【单选题】—Jane, why are you still here? The party has already begun. —What? But I _____ about it. [ ]
A.
don't tell
B.
didn't tell
C.
am not told
D.
wasn't told
【单选题】He can't come to the party. He _____ stay at home. [ ]
A.
has
B.
has to
C.
have
D.
have to
【单选题】The New Year party _ since t.he end of November. [ ]
A.
has planned
B.
was planned
C.
has been planned
D.
is planned
【简答题】我国的选举包括直接选举和间接选举。（ ）
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